Hibernate Validator is affected by an expression language injection vulnerability
Affects listed Hibernate Validator releases up to 9.1.4.Final when user-controlled values go into EL-enabled messages. Fixed in 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final and 9.1.5.Final.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final, 9.1.5.Final
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final, 9.1.5.Final.
- Published
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 25/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Hibernate Validator is affected by an expression language injection flaw that lets an attacker remotely, without logging in, cause a denial of service through uncontrolled resource consumption. The flaw comes from improper escaping of user-controlled data in Expression Language expressions.
Read the original description
Hibernate Validator could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption resulting from improper escaping of user-controlled data in Expression Language (EL) expressions.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure17/25No login or user action needed, reachable over the network without a login · Unknown: Advisories don't say whether default setups are affected
- Reach?/20Unknown. No tracked technology or package matched
- Severity7.5/10CVSS 7.5
- No patch0/5No signal
What would change the score
- Would score about 70 if added to CISA KEV
- Would score about 65 if CISA's SSVC rates exploitation active
- Would score about 30 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final, 9.1.5.Final.
Workaround: Use addExpressionVariable instead of addMessageParameter when injecting user-controlled values into EL-enabled messages.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- IBM Hibernate Validator
From 5.4.1.Final · through 6.2.5.Final; From 7.0.0.Alpha1 · through 7.0.5.Final; From 8.0.0.Alpha1 · through 8.0.5.Final; From 9.0.0.Beta2 · through 9.0.1.Final; From 9.1.0.Alpha1 · through 9.1.4.Final
Evidence 1
- Patch
Corrections
None so far.
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Questions about CVE-2026-93879
Is CVE-2026-93879 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
User-supplied data is placed into Expression Language (EL) expressions in validation messages, such as EL-enabled messages in custom validators. A remote attacker could cause a denial of service through uncontrolled resource consumption.Source: ibm.com
Which versions are affected by CVE-2026-93879?
Hibernate Validator: from 5.4.1.Final through 6.2.5.Final; from 7.0.0.Alpha1 through 7.0.5.Final; from 8.0.0.Alpha1 through 8.0.5.Final; from 9.0.0.Beta2 through 9.0.1.Final; from 9.1.0.Alpha1 through 9.1.4.Final.Source: cve.now feed data
Am I affected, and how do I check?
The affected ranges are 5.4.1.Final through 6.2.5.Final, 7.0.0.Alpha1 through 7.0.5.Final, 8.0.0.Alpha1 through 8.0.5.Final, 9.0.0.Beta2 through 9.0.1.Final, and 9.1.0.Alpha1 through 9.1.4.Final. To check, look up the Hibernate Validator version in your build file or dependency tree, and review whether values from users are passed into EL-enabled messages, such as through addMessageParameter in custom validators.Source: ibm.com
How do I fix CVE-2026-93879?
Upgrade to 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final, 9.1.5.Final or later. Until then, use addExpressionVariable instead of addMessageParameter when injecting user-controlled values into EL-enabled messages.Source: ibm.com