CVE-2026-48913: apache software foundation apache http server Use After Free
CVSS: 7.3v3.1HighAnalyzed
AliasesALPINE-CVE-2026-48913UBUNTU-CVE-2026-48913DEBIAN-CVE-2026-48913
Published 08-06-2026Last modified 08-06-2026
Vulnerability summary
CVE-2026-48913 is a high (CVSS 7.3) Use After Free vulnerability in apache software foundation apache http server. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.2% of scored vulnerabilities.
CVSS score
7.3/10
010
High · v3.1 (CVE.org)EPSS score
1.07%
0%100%
Low · +0.59 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 16 · Related 8Timeline
- 08-06-2026PublishedVulnerability first disclosed.
- 08-06-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 5 sources · 1 versionHigh 7.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LSourcesAll 5 agree
- OSV · AlpineEcosystem advisory · calculated7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- OSV · UbuntuEcosystem advisory · calculated7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- OSV · DebianEcosystem advisory · calculated7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVDNIST7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS trend
Probability
1.07%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
+0.59 pp
From 0.48% on 18-09-2026
18-09-202618-10-2026
EPSS score1.07%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- apache2< 2.4.68-r0
Apache1 product
- http_server≥ 2.4.55, < 2.4.68
Apache software foundation1 product
- apache http server≥ 2.4.55, ≤ 2.4.67
Debian1 product
- apache2< 2.4.68-1~deb12u1 | < 2.4.68-1~deb13u1 | < 2.4.68-1
Ubuntu1 product
- apache2All versions (No fix recorded) | < 2.4.41-4ubuntu3.23+esm5 | < 2.4.52-1ubuntu4.23 | < 2.4.58-1ubuntu8.15 | < 2.4.66-2ubuntu2.4
5 vendors · 5 products
