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UID2-6837: Silence CVE-2026-33416 and CVE-2026-33636 (libpng) in .trivyignore#2473

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BehnamMozafari merged 2 commits into
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bmz-UID2-6864-upgrade-libpng
Apr 1, 2026
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UID2-6837: Silence CVE-2026-33416 and CVE-2026-33636 (libpng) in .trivyignore#2473
BehnamMozafari merged 2 commits into
mainfrom
bmz-UID2-6864-upgrade-libpng

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@BehnamMozafari

@BehnamMozafari BehnamMozafari commented Apr 1, 2026

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Summary

  • Silence CVE-2026-33416 (use-after-free, CVSS 8.1) and CVE-2026-33636 (OOB read/write, CVSS 7.1) in .trivyignore with 1-month expiry (2026-05-01)
  • libpng 1.6.54-r0 is an Alpine OS package from the eclipse-temurin:21-jre-alpine-3.23 base image — not used by our Java services
  • Per the UID2 Vulnerability Handling Guide, silencing is appropriate since the library is not exploitable in our context and the fix depends on the upstream base image being updated

Test plan

  • Verify Trivy scan passes with the updated .trivyignore

BehnamMozafari and others added 2 commits April 1, 2026 18:47
Add apk upgrade libpng to Dockerfile and Azure CC Dockerfile to
upgrade from 1.6.54-r0 to 1.6.56-r0. GCP Dockerfile already had
the upgrade in place.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…vyignore

libpng is an OS-level Alpine package not used by our Java services.
Silence with 1-month expiry (2026-05-01) pending base image update.
Reverts Dockerfile apk upgrade approach in favor of .trivyignore.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
@BehnamMozafari BehnamMozafari changed the title UID2-6864: Upgrade libpng to fix CVE-2026-33416 and CVE-2026-33636 UID2-6837: Silence CVE-2026-33416 and CVE-2026-33636 (libpng) in .trivyignore Apr 1, 2026
@BehnamMozafari BehnamMozafari merged commit 4f7d210 into main Apr 1, 2026
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@BehnamMozafari BehnamMozafari deleted the bmz-UID2-6864-upgrade-libpng branch April 1, 2026 21:28
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2 participants