CVE-2018-6520 json
SimpleSAMLphp Open redirection protection bypass
published 2018-02-02 8 y ago modified 2026-06-17 4 mo ago also GHSA-2qfc-48v5-4w5h , EUVD-2022-2034
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
SimpleSAMLphp before 1.15.2 allows remote attackers to bypass an open redirect protection mechanism via crafted authority data in a URL.
Patch / fix
- packagist simplesamlphp/simplesamlphp 1.15.2
- simplesamlphp simplesamlphp 1.15.1
- simplesamlphp Debian 14, Debian 12 1.15.2-1
debian advisories DEBIAN-CVE-2018-6520
Exploit prediction
0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
| GitHub | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | simplesamlphp/simplesamlphp | <1.15.2 |
1.15.2 |
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
simplesamlphp.org
/security/201801-02
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-6520
advisory
-
github.com
/simplesamlphp/simplesamlphp/issues/1473
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2018-6520.yaml
web
-
github.com
/simplesamlphp/simplesamlphp
package
Sources
- CVE List CVE-2018-6520
- GitHub Advisory GHSA-2qfc-48v5-4w5h
- NVD CVE-2018-6520
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.