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CVE-2026-31824: Sylius is an Open Source eCommerce Framework on Symfony

36
Routine
HIGH 8.2REMOTEUPGRADE

CVE-2026-31824 is a high-severity flaw (CVSS 8.2) affecting sylius. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sylius is an Open Source eCommerce Framework on Symfony. A Time-of-Check To Time-of-Use (TOCTOU) race condition was discovered in the promotion usage limit enforcement. The same class of vulnerability affects the promotion usage limit (the global used counter on Promotion entities), coupon usage limit (the global used counter on PromotionCoupon entities), and coupon per-customer usage limit (the per-customer redemption count on PromotionCoupon en

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score8.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.2% (top 91%)
CISA exploited listNo
WeaknessCWE-362, CWE-367
Published2026-03-10
Last modified2026-06-17
Publisher (CNA): GitHub, Inc. · Vendor: sylius

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

sylius sylius UPGRADE
Affected: < 1.9.12 · >= 1.10.0 and < 1.10.16 · >= 1.11.0 and < 1.11.17 · >= 1.12.0 and < 1.12.23 · >= 1.13.0 and < 1.13.15 · >= 1.14.0 and < 1.14.18 · >= 2.0.0 and < 2.0.16 · >= 2.1.0 and < 2.1.12
Fixed in: 1.9.12, 1.10.16, 1.11.17, 1.12.23, 1.13.15, 1.14.18, 2.0.16, 2.1.12, 2.2.3
Safe to downgrade to: a release before 1.10.0
1. Check installed version
apt-cache policy sylius || rpm -q sylius || sylius --version
2. UPGRADE to 1.9.12 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade sylius
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade sylius
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 1.10.0 (Debian / Ubuntu)
apt-cache madison sylius sudo apt install sylius=<VERSION_BEFORE_1.10.0> sudo apt-mark hold sylius
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list sylius sudo dnf downgrade sylius-<VERSION_BEFORE_1.10.0> sudo dnf versionlock add sylius
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-2026-31824?

sylius: upgrade to 1.9.12, 1.10.16, 1.11.17, 1.12.23, 1.13.15, 1.14.18, 2.0.16, 2.1.12, 2.2.3. Exact commands for each OS are on this page.

Is CVE-2026-31824 being exploited?

CVE-2026-31824 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-2026-31824 affect?

CVE-2026-31824 affects sylius. Severity is high (CVSS 8.2). Sylius is an Open Source eCommerce Framework on Symfony. A Time-of-Check To Time-of-Use (TOCTOU) race condition was discovered in the promotion usage limit enforcement. The same class of vulnerability affects the promotion usage limit (the

How urgent is CVE-2026-31824?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

References

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