CVE-2026-33183: Saloon is a PHP library that gives users tools to build API integrations and SDKs

Q: How do I fix CVE-2026-33183?

saloon: upgrade to 4.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-33183 being exploited?

CVE-2026-33183 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33183 affect?

CVE-2026-33183 affects saloon. Severity is critical (CVSS 9.1). Saloon is a PHP library that gives users tools to build API integrations and SDKs. Prior to version 4.0.0, fixture names were used to build file paths under the configured fixture directory without validation. A name containing path segment

Q: How urgent is CVE-2026-33183?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-33183 is a critical-severity flaw (CVSS 9.1) affecting saloon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Saloon is a PHP library that gives users tools to build API integrations and SDKs. Prior to version 4.0.0, fixture names were used to build file paths under the configured fixture directory without validation. A name containing path segments (e.g. ../traversal or ../../etc/passwd) resulted in a path outside that directory. When the application read a fixture (e.g. for mocking) or wrote one (e.g. when recording responses), it could read or write f

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: saloon

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

Am I affected?

Timeline

2026-03-26 01:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

saloon saloon UPGRADE

Affected: < 4.0.0

Fixed in: 4.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy saloon || rpm -q saloon || saloon --version

2. UPGRADE to 4.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade saloon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade saloon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-33183?

saloon: upgrade to 4.0.0. Exact commands for each OS are on this page.

Is CVE-2026-33183 being exploited?

CVE-2026-33183 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-2026-33183 affect?

CVE-2026-33183 affects saloon. Severity is critical (CVSS 9.1). Saloon is a PHP library that gives users tools to build API integrations and SDKs. Prior to version 4.0.0, fixture names were used to build file paths under the configured fixture directory without validation. A name containing path segment

How urgent is CVE-2026-33183?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-33942 CRITICAL 9.8 UPGRADE Saloon is a PHP library that gives users tools to build API integrations and SDKs
CVE-2026-33182 HIGH 7.5 UPGRADE Saloon is a PHP library that gives users tools to build API integrations and SDKs

References

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