What is CVE-2025-8813?

CVE-2025-8813 is a low-severity vulnerability in Atjiu Pybbs, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 3.5/10. Published 2025-08-10.

How severe is CVE-2025-8813?

Low severity. CVSS v3 base score is 3.5 out of 10.

Is CVE-2025-8813 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Atjiu Pybbs

CVE-2025-8813

A vulnerability has been found in atjiu pybbs up to 6.0.0 and classified as problematic. This vulnerability affects the function changeLanguage of the file src/main/java/co/yiiu/pybbs/controller/front/IndexController.java. The manipulation of the argument referer leads to open redirect. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as edb14ff13e9e05394960ba46c3d31d844ff2deac. It is recommended to apply a patch to fix this issue.

Vulnerability class: Open Redirect

Published 2025-08-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.4th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Atjiu Pybbs — versions 6.0
Pybbs Project

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/atjiu/pybbs/issues/210 (issue-tracking, Exploit, Issue Tracking)
github.com/atjiu/pybbs/issues/210 (issue-tracking, Issue Tracking)
github.com/atjiu/pybbs/issues/210 (issue-tracking, Exploit, exploit, Issue Tracking)
github.com/atjiu/pybbs/commit/edb14ff13e9e05394960ba46c3d31d844ff2deac (Patch, patch)

Frequently asked questions

What is CVE-2025-8813?: CVE-2025-8813 is a low-severity vulnerability in Atjiu Pybbs, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 3.5/10. Published 2025-08-10.
How severe is CVE-2025-8813?: Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2025-8813 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.