GHSA-fc36-5gc3-jmhx

GHSA-fc36-5gc3-jmhx PUBLISHED CVSS 7.5 HIGH

Record from GitHub Advisory Database · Published November 19, 2025

Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
haproxy-2.4	Chainguard	2.4.30-r0
haproxy-2.6	Chainguard	2.6.23-r0
haproxy-2.8	Chainguard	2.8.18-r0

Risk scores

CVSS 3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Vendor	Product	Versions
chainguard	haproxy-2.4	0
chainguard	haproxy-2.6	0
chainguard	haproxy-2.8	0

Timeline

Nov 19, 2025 CVE Published
Apr 10, 2026 Security Advisory

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln GHSA-fc36-5gc3-jmhx
vulnetix vdb fixes GHSA-fc36-5gc3-jmhx

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-fc36-5gc3-jmhx/fixes/registry"

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References

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