🛡️ CVE-2018-6521 — simplesamlphp

🔴 CVSS 9.5 — Critical ✅ No Known Exploit OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

SimpleSAMLphp Use of insecure connection charset (sqlauth module)

The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon encountering four-byte characters. There might be a scenario in which this allows remote attackers to bypass intended access restrictions.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2018-6521 is recorded against 1 package.

  • simplesamlphp/simplesamlphp (fixed in 1.15.2)

Timeline and source

Published on 13 May 2022 and last revised on 7 December 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
lists.debian.org (Web)
simplesamlphp.org (Web)
www.debian.org (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-05-13
Updated 2026-08-12
Modified 2024-12-07
Fix URL N/A

Affected Packages

Software From version Fixed in
simplesamlphp/simplesamlphp — 1.15.2

Exploit Protection

Are you running simplesamlphp?

CVE-2018-6521 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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