ALPINE-CVE-2021-26691
Advisory lineage Upstream: 1 Downstream: 0
Upstream
Published: 10 Jun 2021, 07:15
Last modified:03 Dec 2025, 22:48
Vulnerability Summary
Overall Risk (default)
high
70/100 CVSS Score
9.8 CRITICAL
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
10 Jun 2021, 07:15
Published
Vulnerability first disclosed
03 Dec 2025, 22:48
Last Modified
Vulnerability information updated
Description
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
CVSS Metrics
- v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Systems
- alpine•apache2
< 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0 | < 2.4.48-r0