CVE-2024-43204: apache software foundation apache http server Server-Side Request Forgery (SSRF)
Vulnerability summary
CVE-2024-43204 is a high (CVSS 7.5) Server-Side Request Forgery (SSRF) vulnerability in apache software foundation apache http server. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 13 · Related 10Timeline
- 10-07-2025PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
Description
SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.91%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
+0.10 pp
From 0.81% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- apache2< 2.4.64-r0
Apache1 product
- http_server≥ 2.4.0, < 2.4.64
Apache software foundation1 product
- apache http server≥ 2.4.0, ≤ 2.4.63
Debian1 product
- apache2< 2.4.65-1~deb12u1 | < 2.4.64-1
Ubuntu1 product
- apache2< 2.4.7-1ubuntu4.22+esm12 | < 2.4.18-2ubuntu3.17+esm16 | < 2.4.29-1ubuntu4.27+esm6 | < 2.4.41-4ubuntu3.23+esm2 | < 2.4.52-1ubuntu4.15 | < 2.4.58-1ubuntu8.7 | < 2.4.64-1ubuntu2
5 vendors · 5 products