CVE-2026-56154Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}
Updated under an hour ago ()
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It affects Apache Software Foundation Apache HTTP Server and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.56%, higher than 45% of scored CVEs.
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Free account, 1 product
Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.56% (percentile 45)
- Assigned by
- apache
- NVD analysis
- Analyzed
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache HTTP Server apache_software_foundation:apache_http_server (from the name) | from 2.4.0 through 2.4.68 | CNA record |
apache http_server apache:http_server | from 2.4.0 before 2.4.69 | NVD |
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/10/01/17mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.