CVE-2026-25136 json
Rucio WebUI has a Reflected Cross-site Scripting Vulnerability
published 2026-02-25 8 mo ago modified 2026-07-13 3 mo ago also GHSA-h79m-5jjm-jm4q , PYSEC-2026-3056 , EUVD-2026-8711
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. A reflected Cross-site Scripting vulnerability was located in versions prior to 35.8.3, 38.5.4, and 39.3.1 in the rendering of the ExceptionMessage of the WebUI 500 error which could allow attackers to steal login session tokens of users who navigate to a specially crafted URL. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue.
Patch / fix
- pypi rucio-webui 35.8.3, 38.5.4, 39.3.1
- cern rucio 35.8.3, 38.5.4, 39.3.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/rucio/rucio/security/advisories/GHSA-h79m-5jjm-jm4q referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | rucio-webui | <35.8.3 >=36.0.0rc1, <38.5.4 >=39.0.0rc1, <39.3.1 |
35.8.3 38.5.4 39.3.1 |
Affected products
- rucio rucio
Classification
References
-
github.com
/rucio/rucio/security/advisories/GHSA-h79m-5jjm-jm4q
web, exploit, vendor-advisory
-
cheatsheetseries.owasp.org
/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html
web, not-applicable
-
github.com
/rucio/rucio/releases/tag/35.8.3
web, product, release-notes
-
github.com
/rucio/rucio/releases/tag/38.5.4
web, product, release-notes
-
github.com
/rucio/rucio/releases/tag/39.3.1
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-25136
advisory
-
github.com
/rucio/rucio
package
-
pypi.org
/project/rucio-webui
package
-
github.com
/advisories/GHSA-h79m-5jjm-jm4q
advisory
Sources
- CVE List CVE-2026-25136
- GitHub Advisory GHSA-h79m-5jjm-jm4q
- NVD CVE-2026-25136
- OSV PYSEC-2026-3056
Fencer Vulns 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.