Approved changes feed: RSS · Atom

Vendor: Jenkins

Vendor UUID: d708d718-2e77-5ca3-ae9c-38ee4d256744

Product token: github_branch_source

Product UUID: c6f54066-8d57-50c5-a436-4404bbc22c4d

No product notes yet.

Approved metadata

Approved notes

Approved relationships

Combined product view

This product does not currently have eligible product/vendor synonym or equivalent links.

PURL mappings

PURLCPE URIVersionSourceLast updated
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:*:*:* * purl2cpe 2026-06-01 10:14:09.543411
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:0.1:beta-1:*:*:*:jenkins:*:* 0.1 purl2cpe 2026-06-01 10:14:09.543409
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:0.1:beta-2:*:*:*:jenkins:*:* 0.1 purl2cpe 2026-06-01 10:14:09.543412
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:0.1:beta-3:*:*:*:jenkins:*:* 0.1 purl2cpe 2026-06-01 10:14:09.543414
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:0.1:beta-4:*:*:*:jenkins:*:* 0.1 purl2cpe 2026-06-01 10:14:09.543415
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.0:*:*:*:*:jenkins:*:* 1.0 purl2cpe 2026-06-01 10:14:09.543416
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.1:*:*:*:*:jenkins:*:* 1.1 purl2cpe 2026-06-01 10:14:09.543419
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.10:*:*:*:*:jenkins:*:* 1.10 purl2cpe 2026-06-01 10:14:09.543418
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.2:*:*:*:*:jenkins:*:* 1.2 purl2cpe 2026-06-01 10:14:09.543420
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.3:*:*:*:*:jenkins:*:* 1.3 purl2cpe 2026-06-01 10:14:09.543422
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.4:*:*:*:*:jenkins:*:* 1.4 purl2cpe 2026-06-01 10:14:09.543424
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.4:beta-1:*:*:*:jenkins:*:* 1.4 purl2cpe 2026-06-01 10:14:09.543423
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.5:*:*:*:*:jenkins:*:* 1.5 purl2cpe 2026-06-01 10:14:09.543426
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.6:*:*:*:*:jenkins:*:* 1.6 purl2cpe 2026-06-01 10:14:09.543427
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.7:*:*:*:*:jenkins:*:* 1.7 purl2cpe 2026-06-01 10:14:09.543428
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.8:*:*:*:*:jenkins:*:* 1.8 purl2cpe 2026-06-01 10:14:09.543431
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.8.1:*:*:*:*:jenkins:*:* 1.8.1 purl2cpe 2026-06-01 10:14:09.543430
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:1.9:*:*:*:*:jenkins:*:* 1.9 purl2cpe 2026-06-01 10:14:09.543432
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.0:*:*:*:*:jenkins:*:* 2.0.0 purl2cpe 2026-06-01 10:14:09.543437
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.0:beta-1:*:*:*:jenkins:*:* 2.0.0 purl2cpe 2026-06-01 10:14:09.543434
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.0:beta-2:*:*:*:jenkins:*:* 2.0.0 purl2cpe 2026-06-01 10:14:09.543435
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:*:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543446
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-1:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543438
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-2:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543439
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-3:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543441
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-4:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543442
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-5:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543443
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-6:*:*:*:jenkins:*:* 2.0.1 purl2cpe 2026-06-01 10:14:09.543445
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.2:*:*:*:*:jenkins:*:* 2.0.2 purl2cpe 2026-06-01 10:14:09.543447
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.3:*:*:*:*:jenkins:*:* 2.0.3 purl2cpe 2026-06-01 10:14:09.543449
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.4:*:*:*:*:jenkins:*:* 2.0.4 purl2cpe 2026-06-01 10:14:09.543451
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.4:beta-1:*:*:*:jenkins:*:* 2.0.4 purl2cpe 2026-06-01 10:14:09.543450
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.5:*:*:*:*:jenkins:*:* 2.0.5 purl2cpe 2026-06-01 10:14:09.543453
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.6:*:*:*:*:jenkins:*:* 2.0.6 purl2cpe 2026-06-01 10:14:09.543454
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.7:*:*:*:*:jenkins:*:* 2.0.7 purl2cpe 2026-06-01 10:14:09.543456
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.0.8:*:*:*:*:jenkins:*:* 2.0.8 purl2cpe 2026-06-01 10:14:09.543457
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:*:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543467
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-1:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543458
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-2:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543460
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-3:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543461
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-4:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543463
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:beta-1:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543464
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.0:beta-2:*:*:*:jenkins:*:* 2.2.0 purl2cpe 2026-06-01 10:14:09.543465
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.1:*:*:*:*:jenkins:*:* 2.2.1 purl2cpe 2026-06-01 10:14:09.543468
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.2:*:*:*:*:jenkins:*:* 2.2.2 purl2cpe 2026-06-01 10:14:09.543469
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.3:*:*:*:*:jenkins:*:* 2.2.3 purl2cpe 2026-06-01 10:14:09.543471
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.4:*:*:*:*:jenkins:*:* 2.2.4 purl2cpe 2026-06-01 10:14:09.543472
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.5:*:*:*:*:jenkins:*:* 2.2.5 purl2cpe 2026-06-01 10:14:09.543474
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.2.6:*:*:*:*:jenkins:*:* 2.2.6 purl2cpe 2026-06-01 10:14:09.543475
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.0:*:*:*:*:jenkins:*:* 2.3.0 purl2cpe 2026-06-01 10:14:09.543476
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.1:*:*:*:*:jenkins:*:* 2.3.1 purl2cpe 2026-06-01 10:14:09.543478
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.2:*:*:*:*:jenkins:*:* 2.3.2 purl2cpe 2026-06-01 10:14:09.543479
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.3:*:*:*:*:jenkins:*:* 2.3.3 purl2cpe 2026-06-01 10:14:09.543480
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.4:*:*:*:*:jenkins:*:* 2.3.4 purl2cpe 2026-06-01 10:14:09.543482
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.5:*:*:*:*:jenkins:*:* 2.3.5 purl2cpe 2026-06-01 10:14:09.543483
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.3.6:*:*:*:*:jenkins:*:* 2.3.6 purl2cpe 2026-06-01 10:14:09.543484
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.0:-:*:*:*:jenkins:*:* 2.4.0 purl2cpe 2026-06-01 10:14:09.543487
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.0:beta1:*:*:*:jenkins:*:* 2.4.0 purl2cpe 2026-06-01 10:14:09.543486
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.1:*:*:*:*:jenkins:*:* 2.4.1 purl2cpe 2026-06-01 10:14:09.543489
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.2:*:*:*:*:jenkins:*:* 2.4.2 purl2cpe 2026-06-01 10:14:09.543490
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.3:beta1:*:*:*:jenkins:*:* 2.4.3 purl2cpe 2026-06-01 10:14:09.543491
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.4:*:*:*:*:jenkins:*:* 2.4.4 purl2cpe 2026-06-01 10:14:09.543493
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.5:*:*:*:*:jenkins:*:* 2.4.5 purl2cpe 2026-06-01 10:14:09.543494
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.6:beta1:*:*:*:jenkins:*:* 2.4.6 purl2cpe 2026-06-01 10:14:09.543495
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:2.4.6:beta2:*:*:*:jenkins:*:* 2.4.6 purl2cpe 2026-06-01 10:14:09.543497
pkg:github/jenkinsci/github-branch-source-plugin cpe:2.3:a:jenkins:github_branch_source:684.vea_fa_7c1e2fe3:*:*:*:*:jenkins:*:* 684.vea_fa_7c1e2fe3 purl2cpe 2026-06-01 10:14:09.543498

db.gcve.eu vulnerability lookup

Run a CPE search on db.gcve.eu at product-level wildcard or on an exact CPE version.

cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:*:*:*

CPE entries

CPE URIVersionPartGCVE lookupExport
cpe:2.3:a:jenkins:github_branch_source:0.1:beta-1:*:*:*:jenkins:*:* 0.1 a
cpe:2.3:a:jenkins:github_branch_source:0.1:beta-2:*:*:*:jenkins:*:* 0.1 a
cpe:2.3:a:jenkins:github_branch_source:0.1:beta-3:*:*:*:jenkins:*:* 0.1 a
cpe:2.3:a:jenkins:github_branch_source:0.1:beta-4:*:*:*:jenkins:*:* 0.1 a
cpe:2.3:a:jenkins:github_branch_source:1.0:*:*:*:*:jenkins:*:* 1.0 a
cpe:2.3:a:jenkins:github_branch_source:1.1:*:*:*:*:jenkins:*:* 1.1 a
cpe:2.3:a:jenkins:github_branch_source:1.2:*:*:*:*:jenkins:*:* 1.2 a
cpe:2.3:a:jenkins:github_branch_source:1.3:*:*:*:*:jenkins:*:* 1.3 a
cpe:2.3:a:jenkins:github_branch_source:1.4:*:*:*:*:jenkins:*:* 1.4 a
cpe:2.3:a:jenkins:github_branch_source:1.4:beta-1:*:*:*:jenkins:*:* 1.4 a
cpe:2.3:a:jenkins:github_branch_source:1.5:*:*:*:*:jenkins:*:* 1.5 a
cpe:2.3:a:jenkins:github_branch_source:1.6:*:*:*:*:jenkins:*:* 1.6 a
cpe:2.3:a:jenkins:github_branch_source:1.7:*:*:*:*:jenkins:*:* 1.7 a
cpe:2.3:a:jenkins:github_branch_source:1.8:*:*:*:*:jenkins:*:* 1.8 a
cpe:2.3:a:jenkins:github_branch_source:1.8.1:*:*:*:*:jenkins:*:* 1.8.1 a
cpe:2.3:a:jenkins:github_branch_source:1.9:*:*:*:*:jenkins:*:* 1.9 a
cpe:2.3:a:jenkins:github_branch_source:1.10:*:*:*:*:jenkins:*:* 1.10 a
cpe:2.3:a:jenkins:github_branch_source:2.0.0:*:*:*:*:jenkins:*:* 2.0.0 a
cpe:2.3:a:jenkins:github_branch_source:2.0.0:beta-1:*:*:*:jenkins:*:* 2.0.0 a
cpe:2.3:a:jenkins:github_branch_source:2.0.0:beta-2:*:*:*:jenkins:*:* 2.0.0 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:*:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-1:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-2:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-3:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-4:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-5:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.1:beta-6:*:*:*:jenkins:*:* 2.0.1 a
cpe:2.3:a:jenkins:github_branch_source:2.0.2:*:*:*:*:jenkins:*:* 2.0.2 a
cpe:2.3:a:jenkins:github_branch_source:2.0.3:*:*:*:*:jenkins:*:* 2.0.3 a
cpe:2.3:a:jenkins:github_branch_source:2.0.4:*:*:*:*:jenkins:*:* 2.0.4 a
cpe:2.3:a:jenkins:github_branch_source:2.0.4:beta-1:*:*:*:jenkins:*:* 2.0.4 a
cpe:2.3:a:jenkins:github_branch_source:2.0.5:*:*:*:*:jenkins:*:* 2.0.5 a
cpe:2.3:a:jenkins:github_branch_source:2.0.6:*:*:*:*:jenkins:*:* 2.0.6 a
cpe:2.3:a:jenkins:github_branch_source:2.0.7:*:*:*:*:jenkins:*:* 2.0.7 a
cpe:2.3:a:jenkins:github_branch_source:2.0.8:*:*:*:*:jenkins:*:* 2.0.8 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:*:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-1:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-2:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-3:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:alpha-4:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:beta-1:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.0:beta-2:*:*:*:jenkins:*:* 2.2.0 a
cpe:2.3:a:jenkins:github_branch_source:2.2.1:*:*:*:*:jenkins:*:* 2.2.1 a
cpe:2.3:a:jenkins:github_branch_source:2.2.2:*:*:*:*:jenkins:*:* 2.2.2 a
cpe:2.3:a:jenkins:github_branch_source:2.2.3:*:*:*:*:jenkins:*:* 2.2.3 a
cpe:2.3:a:jenkins:github_branch_source:2.2.4:*:*:*:*:jenkins:*:* 2.2.4 a
cpe:2.3:a:jenkins:github_branch_source:2.2.5:*:*:*:*:jenkins:*:* 2.2.5 a
cpe:2.3:a:jenkins:github_branch_source:2.2.6:*:*:*:*:jenkins:*:* 2.2.6 a
cpe:2.3:a:jenkins:github_branch_source:2.3.0:*:*:*:*:jenkins:*:* 2.3.0 a
cpe:2.3:a:jenkins:github_branch_source:2.3.1:*:*:*:*:jenkins:*:* 2.3.1 a
cpe:2.3:a:jenkins:github_branch_source:2.3.2:*:*:*:*:jenkins:*:* 2.3.2 a
cpe:2.3:a:jenkins:github_branch_source:2.3.3:*:*:*:*:jenkins:*:* 2.3.3 a
cpe:2.3:a:jenkins:github_branch_source:2.3.4:*:*:*:*:jenkins:*:* 2.3.4 a
cpe:2.3:a:jenkins:github_branch_source:2.3.5:*:*:*:*:jenkins:*:* 2.3.5 a
cpe:2.3:a:jenkins:github_branch_source:2.3.6:*:*:*:*:jenkins:*:* 2.3.6 a
cpe:2.3:a:jenkins:github_branch_source:2.4.0:-:*:*:*:jenkins:*:* 2.4.0 a
cpe:2.3:a:jenkins:github_branch_source:2.4.0:beta1:*:*:*:jenkins:*:* 2.4.0 a
cpe:2.3:a:jenkins:github_branch_source:2.4.1:*:*:*:*:jenkins:*:* 2.4.1 a
cpe:2.3:a:jenkins:github_branch_source:2.4.2:*:*:*:*:jenkins:*:* 2.4.2 a
cpe:2.3:a:jenkins:github_branch_source:2.4.3:beta1:*:*:*:jenkins:*:* 2.4.3 a
cpe:2.3:a:jenkins:github_branch_source:2.4.4:*:*:*:*:jenkins:*:* 2.4.4 a
cpe:2.3:a:jenkins:github_branch_source:2.4.5:*:*:*:*:jenkins:*:* 2.4.5 a
cpe:2.3:a:jenkins:github_branch_source:2.4.6:beta1:*:*:*:jenkins:*:* 2.4.6 a
cpe:2.3:a:jenkins:github_branch_source:2.4.6:beta2:*:*:*:jenkins:*:* 2.4.6 a
cpe:2.3:a:jenkins:github_branch_source:684.vea_fa_7c1e2fe3:*:*:*:*:jenkins:*:* 684.vea_fa_7c1e2fe3 a
cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:*:*:* * a