CVE-2025-2833

Public Exploit
zhangyd-c OneBlog HTTP Header redos

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.

Category

6.9
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Third-Party Advisory vuldb.com Third-Party Advisory vuldb.com
Affected: zhangyd-c OneBlog
Published at:
Updated at:

References

Link Tags
https://vuldb.com/?id.301470 third party advisory vdb entry technical description
https://vuldb.com/?ctiid.301470 signature vdb entry permissions required
https://vuldb.com/?submit.521813 third party advisory vdb entry
https://github.com/zhangyd-c/OneBlog/issues/35 issue tracking exploit
https://github.com/zhangyd-c/OneBlog/issues/35#issue-2914268214 issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2025-2833?
CVE-2025-2833 has been scored as a medium severity vulnerability.
How to fix CVE-2025-2833?
To fix CVE-2025-2833, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-2833 being actively exploited in the wild?
It is possible that CVE-2025-2833 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-2833?
CVE-2025-2833 affects zhangyd-c OneBlog.
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