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TI-2018-05596 Aliases CVE-2018-7753GHSA-m9mq-p2f9-cfqv

An issue was discovered in Bleach 2.1.x before 2.1.3.

Priority MEDIUM 46CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

Why it matters now

EPSS 0.02172 82nd percentileScored 2026-11-07
Fix Fixed bleach (PyPI): 2.1.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—bleach (PyPI)2.1.0 to before 2.1.32.1.3Patch availableGHSA-m9mq-p2f9-cfqv
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • bleach (PyPI) Vendor— Affected 2.1.0 to before 2.1.3 Fixed in 2.1.3 Patch available GHSA-m9mq-p2f9-cfqv

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:bleach:2.1:*:*:*:*:*:*:*2.1VulnerableMozilla
cpe:2.3:a:mozilla:bleach:2.1.1:*:*:*:*:*:*:*2.1.1VulnerableMozilla
cpe:2.3:a:mozilla:bleach:2.1.2:*:*:*:*:*:*:*2.1.2VulnerableMozilla
  • cpe:2.3:a:mozilla:bleach:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:bleach:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:bleach:2.1.2:*:*:*:*:*:*:* Versions 2.1.2 Vulnerable ·Mozilla

Remediation

  • Fix · GHSA-m9mq-p2f9-cfqv bleach (PyPI) Fixed in 2.1.3 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-7753
  2. 2026-10-03 Alias added: GHSA-m9mq-p2f9-cfqv

References

Patch 1

Advisory 3

Other 2

  • TI-2020-05527 Regular expression denial of service in Mozilla Bleach CVSS 3.1HIGH 7.5
  • TI-2021-06301 Cross-site scripting in Mozilla Bleach CVSS 3.1MEDIUM 6.1
  • TI-2020-05512 Cross-site scripting in Mozilla Bleach CVSS 3.1MEDIUM 6.1
  • TI-2020-05526 Cross-site scripting in Mozilla Bleach CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences