CVE-2021-23266

MEDIUMNVD 4.34.3—

4.3

An anonymous user can craft a URL with text that ends up in the log viewer as is. The text can then include textual messages to mislead the administrator.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 47.6%
KEV: Not listed

Published

May 16, 2022

Last Modified

November 21, 2024

References (2)

security@craftersoftwarehttps://docs.craftercms.org/en/3.1/security/advisory.html#cv-2022051602
af854a3a-2127-422b-91ae-364da2661108https://docs.craftercms.org/en/3.1/security/advisory.html#cv-2022051602

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.craftercms:craftercms	—	3.1.18	—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 22:02 UTCEG score recompute
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-23266?

CVE-2021-23266 is a medium vulnerability published on May 16, 2022. An anonymous user can craft a URL with text that ends up in the log viewer as is. The text can then include textual messages to mislead the administrator.

When was CVE-2021-23266 disclosed?

CVE-2021-23266 was first published in the National Vulnerability Database on May 16, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-23266 actively exploited?

CVE-2021-23266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-23266?

CVE-2021-23266 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2021-23266?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-23266, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-23266

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Is Your Infrastructure Affected by CVE-2021-23266?

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