VDB
ALPINE-CVE-2021-26691
ALPINE-CVE-2021-26691
PUBLISHED
CVSS 9.800000190734863 CRITICAL
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
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.14 | apache2 | 0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.19 | apache2 | 2.4.27-r2, 0, 2.2.16-r0 |
| Alpine:v3.22 | apache2 | 2.4.18-r0, 2.4.20-r0, 2.4.6-r2 |
| Alpine:v3.10 | apache2 | 2.2.16-r1, 2.2.16-r3, 2.2.17-r0 |
| Alpine:v3.18 | apache2 | 0, 2.4.17-r2, 2.4.23-r2 |
| Alpine:v3.11 | apache2 | 2.4.34-r0, 2.4.23-r8, 2.4.3-r0 |
| Alpine:v3.13 | apache2 | 2.2.22-r1, 2.2.21-r2, 2.4.17-r6 |
| Alpine:v3.20 | apache2 | 2.2.16-r0, 2.4.23-r8, 2.4.9-r0 |
| Alpine:v3.12 | apache2 | 2.4.23-r5, 0, 2.2.16-r0 |
| Alpine:v3.23 | apache2 | 2.4.23-r0, 0, 2.2.16-r0 |
| Alpine:v3.17 | apache2 | 2.4.6-r4, 2.4.9-r0, 2.4.27-r1 |
| Alpine:v3.24 | apache2 | 0 |
| Alpine:v3.21 | apache2 | 2.4.38-r0, 2.4.34-r0, 2.4.23-r2 |
| Alpine:v3.16 | apache2 | 0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.15 | apache2 | 2.2.17-r2, 2.2.16-r3, 2.2.16-r2 |
Timeline
- Jun 10, 2021 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch