CVE-2021-42576

highpriority · track · 40EPSS 0.016 · 75 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.56% (75th) EPSS

CVSS 7.5 · high

Is it mine?

33 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-22

The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20US

affected products (33)

Products and version ranges known to be affected.

Communicationsall versionscert_bundDEcpe:/a:oracle:communications:25.2.201
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:8.0-8.3
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:8.0-8.1
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:7.5.1
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:7.0.0
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:47.0.0.2.0
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:24.2.4-25.2.000
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:26.1.202
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:26.1.200
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:25.2.202
Oracle Communications 11.0all versionscert_bundDEcpe:/a:oracle:communications:11.0
Oracle Communications 14.0all versionscert_bundDEcpe:/a:oracle:communications:14.0
Oracle Communications 15.0.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.0.0.0.0
Oracle Communications 15.0.1.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.0.1.0.0
Oracle Communications 15.1.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.1.0.0.0
Oracle Communications 15.2.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.2.0.0.0
Oracle Communications 25.1.100all versionscert_bundDEcpe:/a:oracle:communications:25.1.100
Oracle Communications 25.1.200all versionscert_bundDEcpe:/a:oracle:communications:25.1.200
Oracle Communications 25.2.100all versionscert_bundDEcpe:/a:oracle:communications:25.2.100
Oracle Communications 25.2.200all versionscert_bundDEcpe:/a:oracle:communications:25.2.200

showing 20 of 33

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-4090Oracle Communications: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
GHSA-x95h-979x-cf3jPolicies not properly enforced in bluemonday2021-10-19ghsa · osvUS
The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.
GO-2022-0588Cross-site scripting via leaked style elements in github.com/microcosm-cc/bluemonday2022-08-15vendor · osvUS
The bluemonday HTML sanitizer can leak the contents of a "style" element into HTML output, potentially causing XSS vulnerabilities. The default bluemonday sanitization policies are not vulnerable. Only user-defined policies allowing "select", "style", and "option" elements are affected. Permitting the "style" element in policies is hazardous, because bluemonday does not contain a CSS sanitizer. Newer versions of bluemonday suppress "style" and "script" elements even when allowed by a policy unless the policy explicitly requests unsafe processing.
PYSEC-2021-8492021-10-18vendor · osvUS
The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund NVD CVE.org MITRE

published 2021-10-18modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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