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CVE-2018-20857 — Vulnerability in samlr — CVE Details

HIGH

samlr XML nodes comment attack

Published July 31, 2019Updated February 16, 2024Source: osv

Summary

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.

Advisory Timeline

  • First published July 31, 2019 (2630 days ago).
  • Last revised February 16, 2024 — 1661 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update samlr to 2.6.2 or later
gem install samlr -v 2.6.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
samlr
rubygems
2.0.0, 2.0.1, 2.0.2, 2.0.3 (+11 more)2.6.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-20
    Improper Input ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Frequently Asked Questions

What is CVE-2018-20857?
samlr XML nodes comment attack This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2018-20857?
CVE-2018-20857 affects samlr. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-20857 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-qpxp-5j56-gg3x

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  • CVE-2026-77601
    HIGH

    OpenC3 COSMOS: Authenticated OS command injection via the `pypi_url` setting

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