CVE-2018-6520: simplesamlphp Open Redirect
CVSS: 6.1v3.0MediumModified
AliasesUBUNTU-CVE-2018-6520DEBIAN-CVE-2018-6520
Published 02-02-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-6520 is a medium (CVSS 6.1) Open Redirect vulnerability in simplesamlphp. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 57.7% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.0 (NVD)EPSS score
0.85%
0%100%
Low · -0.29 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 02-02-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
SimpleSAMLphp before 1.15.2 allows remote attackers to bypass an open redirect protection mechanism via crafted authority data in a URL.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 5.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.85%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
-0.29 pp
From 1.14% on 21-09-2026
21-09-202621-10-2026
EPSS score0.85%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- simplesamlphp< 1.15.2-1
Simplesamlphp1 product
- simplesamlphp≥ 1.12.0, < 1.15.1
Ubuntu1 product
- simplesamlphpAll versions (No fix recorded)
3 vendors · 3 products
