What’s Vulnerable › Vulnerabilities

CVE-2018-20857

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-07-26 · updated 2026-06-17
• Weakness: CWE-20

Description

Zendesk Samlr before 2.6.2 allows an XML nodes comment attack such as a name_id node with user@example.com followed by <!---->. and then the attacker's domain name.

Affected products

• Zendesk Samlr: before 2.6.2 — fixed in 2.6.2

How to fix

Upgrade to a fixed version: Zendesk Samlr 2.6.2. Check the vendor advisory for mitigations.

References

• https://github.com/zendesk/samlr/compare/v2.6.1...v2.6.2
• https://github.com/zendesk/samlr/compare/v2.6.1...v2.6.2

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