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Fencer Intel
critical 9.8

CVE-2025-50900 json

An issue was discovered in getrebuild/rebuild 4.0.4.

published last yr. modified 4mo ago also EUVD-2025-25788

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to obtain the URL-decoded request path, and then determine whether the path endsWith /error. If so, execute return true to skip this Interceptor. Else, redirect to /user/login api. Allowing unauthenticated attackers to gain sensitive information or escalated privileges.

Is CVE-2025-50900 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • notion.so https://www.notion.so/racerz/Rebuild-Vulnerability-1ede0e0074f280d8a906c38442a393f0?pvs=4 referenced PoC, tagged "exploit" by a source, unverified
  • racerz.notion.site https://racerz.notion.site/Rebuild-Vulnerability-1ede0e0074f280d8a906c38442a393f0 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.