CVE-2026-45372
| Summary |
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.
|
| Publication Date |
May 30, 2026, 5:16 a.m. |
| Registration Date |
May 31, 2026, 4:15 a.m. |
| Last Update |
June 2, 2026, 3:34 a.m. |
|
CVSS3.1 : CRITICAL
|
| スコア |
9.9
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更あり |
| 機密性への影響(C) |
低 |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
低 |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:* |
|
|
|
0.44.0 |
Related information, measures and tools
Common Vulnerabilities List