CVE-2025-2833: zhangyd-c OneBlog HTTP Header redos

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-03-27 · updated 2026-06-17
Weakness: CWE-400

Description

A vulnerability was found in zhangyd-c OneBlog up to 2.3.9. It has been classified as problematic. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products

zhangyd-c OneBlog: through 2.3.9

References

https://github.com/zhangyd-c/OneBlog/issues/35
https://github.com/zhangyd-c/OneBlog/issues/35#issue-2914268214
https://vuldb.com/?ctiid.301470
https://vuldb.com/?id.301470
https://vuldb.com/?submit.521813
https://github.com/zhangyd-c/OneBlog/issues/35
https://github.com/zhangyd-c/OneBlog/issues/35#issue-2914268214

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