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CVE-2026-57818: A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple t

48
This month
HIGH 8.1REMOTEWATCHLISTUPGRADE

CVE-2026-57818 is a high-severity flaw (CVSS 8.1) affecting cxf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issue.

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score8.1 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 60%)
CISA exploited listNo
WeaknessCWE-367
Published2026-08-06
Last modified2026-10-23
Publisher (CNA): Apache Software Foundation · Vendor: apache

Am I affected?

Timeline

apache cxf UPGRADE
Affected: < 3.6.12 · >= 4.0.0 and < 4.1.8 · >= 4.2.0 and < 4.2.3
Fixed in: 3.6.12, 4.1.8, 4.2.3
Safe to downgrade to: a release before 4.0.0
1. Check installed version
apt-cache policy cxf || rpm -q cxf || cxf --version
2. UPGRADE to 3.6.12 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cxf
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cxf
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 cxf sudo apt install cxf=<VERSION_BEFORE_4.0.0> sudo apt-mark hold cxf
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list cxf sudo dnf downgrade cxf-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add cxf
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.

Exact fixes by distribution

Fedora 46 · python-trimesh · FIXED · 5.2.0-1.fc46 · FEDORA-2026-429b4bad4c · source
sudo dnf upgrade --advisory=FEDORA-2026-429b4bad4c
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-2026-57818?

cxf: upgrade to 3.6.12, 4.1.8, 4.2.3. Exact commands for each OS are on this page.

Is CVE-2026-57818 being exploited?

CVE-2026-57818 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-2026-57818 affect?

CVE-2026-57818 affects cxf. Severity is high (CVSS 8.1). A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrad

How urgent is CVE-2026-57818?

Priority 48/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

References

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