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CVE-2026-40995: X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certific

20
Routine
MEDIUM 5.4UPGRADE

CVE-2026-40995 is a medium-severity flaw (CVSS 5.4) affecting spring web services. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or credentials-expired accounts). Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score5.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.1% (top 96%)
CISA exploited listNo
WeaknessCWE-287
Published2026-06-11
Last modified2026-09-04
Publisher (CNA): VMware · Vendor: broadcom

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Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

broadcom spring web services UPGRADE
Affected: < 3.1.9 · >= 4.0.0 and < 4.0.19 · >= 4.1.0 and < 4.1.3.1 · >= 5.0.0 and < 5.0.1.1
Fixed in: 3.1.9, 4.0.19, 4.1.3.1, 5.0.1.1
Safe to downgrade to: a release before 4.0.0
1. Check installed version
apt-cache policy spring-web-services || rpm -q spring-web-services || spring-web-services --version
2. UPGRADE to 3.1.9 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade spring-web-services
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade spring-web-services
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)
apt-cache madison spring-web-services sudo apt install spring-web-services=<VERSION_BEFORE_4.0.0> sudo apt-mark hold spring-web-services
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list spring-web-services sudo dnf downgrade spring-web-services-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add spring-web-services
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40995?

spring web services: upgrade to 3.1.9, 4.0.19, 4.1.3.1, 5.0.1.1. Exact commands for each OS are on this page.

Is CVE-2026-40995 being exploited?

CVE-2026-40995 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40995 affect?

CVE-2026-40995 affects spring web services. Severity is medium (CVSS 5.4). X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or cre

How urgent is CVE-2026-40995?

Priority 20/100. No elevated risk signals yet.

Related CVEs

References

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