9.8 CriticalCWE-122
CVE-2026-28780
Apache HTTP Server: buffer overflow in mod_proxy_ajp via ajp_msg_check_header()
Apache Software FoundationApache HTTP Server
Status
- Not in CISA KEV
- Vendor fix available
Exploit probabilityEPSSchecked 24 Oct
1.6%probability of exploitation in the next 30 days
Higher than 76% of scored CVEs
SeverityCVSS
9.8Critical
Description NVD
Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Coverage 1 article · 1 outlet
- Apache patches HTTP Server and MINA flaws, warns of RCE riskSecurityWeek · first in our coverage · mentions it in passing