Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's
Source GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 16:21 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software FoundationApache HTTP Server | Affected
| Fixed in– |
Apacheapache/httpdpkg:rpm/apache/httpdOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should monitor official Apache HTTP Server advisories for updates and apply patches once available.
Description
A concurrency vulnerability in Apache HTTP Server's mod_http2 module (assign_headers function) allows improper synchronization of shared resources, potentially leading to remote code execution (RCE). This affects Apache HTTP Server versions from 2.4.55 through 2.4.70 and mod_h2 releases from 2.0.8 through 2.0.42.