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CVE-2026-119618

Critical RCE in Apache HTTP Server mod_http2 via improper synchronization

Major vulnerability. Targets widely deployed Apache HTTP Server; critical 9.8 RCE in mod_http2 can allow mass compromise of web servers and infrastructure.

CVSS: 9.8Critical
Exploited in the wild: Not knownnot in CISA KEV as of our last sync
EPSS: No score yet
Fix: Patch availablesee the advisories in the references
Published: 11 Nov 2026analysed here 12 Nov 2026

Summary

Impact

Remote code execution via a race condition in mod_http2 assign_headers(), enabling arbitrary code execution as the web server process.

The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.

Affected products

Product	Affected versions	Vendor says fixed in
Apache Software Foundation Apache HTTP Server	>= 2.4.55 and <= 2.4.70Vendor says fixed in: not stated	Not stated by the vendor

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

Products named in our analysis

Apache HTTP Server 2.4.55-2.4.70
mod_h2 2.0.8-2.0.42

Fix and mitigation

Action required

Immediate action required

Remediation steps (AI-written)

Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.

Exploitation evidence

CISA KEV catalog: Not listed as of our last sync.
Public exploit code: None on record in Exploit-DB, Metasploit, Nuclei templates or PoC-in-GitHub.

Timeline

11 Nov 2026Published
12 Nov 2026CVE record last updated1 day later
12 Nov 2026Analysed by vulneraibility.comsame day later

Common questions

Is CVE-2026-119618 being exploited?

Not confirmed. CVE-2026-119618 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.

How severe is CVE-2026-119618?

CVE-2026-119618 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-119618?

Yes. A fix has been recorded for CVE-2026-119618. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-119618 affect?

CVE-2026-119618 affects Apache HTTP Server 2.4.55-2.4.70, mod_h2 2.0.8-2.0.42. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-119618?

Apply vendor fixes or upgrade Apache/mod_h2 immediately; restart and validate services.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

References

NVD CVE.org CVE Details Source

7 references in the CVE record, grouped by the tags the record gives them.

Advisories (1)

httpd.apache.org /security/vulnerabilities_24.html

Where the data on this page comes from

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
FIRST EPSS: exploit probability and percentile

Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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