CVE-2026-48913

HIGH 7.3

Published 2026-06-08 · Last modified 2026-06-08

Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.

ELEVATED IMPACT

Severe if exploited (CVSS 7.3), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 37th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

7.3CVSS 3.1 · HIGH

ConfidentialityLow
IntegrityLow
AvailabilityLow

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Affected

Vendors Apache Software Foundation

Products Apache Http Server

Weakness (CWE)

CWE-416: Use after free

CVSS vector

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

References

Advisories

https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory

Technical & other

http://www.openwall.com/lists/oss-security/2026/06/08/15

Sources: NVD · CVE.org · EPSS