CVE-2026-57941

VendorapacheProducthttp serverDiscoveredOct 1, 2026UpdatedOct 5, 2026

Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

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CVSS v3.1

9.8 CRITICAL

EPSS

0.57%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

Intelligence Reports1

1 intelligence report available

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EPSS Trend

Oct 3, 2026 → Oct 26, 2026

▲ 0.13pp

0.44% → 0.57% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Connections

2 relationships

CWE-416

source

Timeline

disclosure → media coverage

Oct 1, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 5, 2026