Spring SPEL Expression Language Injection

published 2021-12-02 4y ago modified 2026-06-17 4mo ago also EUVD-2021-10357

cvss: 4.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

Authenticated users with Administrator or Developer roles may execute OS commands by SPEL Expression in Spring beans. SPEL Expression does not have security restrictions, which will cause attackers to execute arbitrary commands remotely (RCE).

Patch / fix

fixed in 1

Crafter Software Crafter CMS 3.1.12

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Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.2	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

Crafter Software Crafter CMS

Classification

Weakness

CWE-913 Improper Control of Dynamically-Managed Code Resources

References

docs.craftercms.org /en/3.1/security/advisory.html#cv-2021120101
vendor-advisory

Sources

CVE List CVE-2021-23258
NVD CVE-2021-23258

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