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HIGH severity

CVE-2018-25074 — skeemas

HIGHFix: Prestaul/skeemas@65e94ed

CVE-2018-25074 is a high-severity (CVSS 7.5) CWE-1333 vulnerability in skeemas. A fix is available for skeemas — see the affected versions and patch details below.

skeemas Inefficient Regular Expression Complexity vulnerability

Also known asGHSA-qv66-f876-vjvr
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2018-25074.

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk+0.04%
Lower risk than most CVEs61th percentile — riskier than 61% of all scored CVEsHighest risk
0.00%0.49%0.97%1.46%0.5%1.0%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

11other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
skeemasnpm
635downloads / week

Description

A vulnerability was found in Prestaul skeemas and classified as problematic. This issue affects some unknown processing of the file validators/base.js. The manipulation of the argument uri leads to inefficient regular expression complexity. The name of the patch is 65e94eda62dc8dc148ab3e59aa2ccc086ac448fd. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-218003.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmskeemasall versions1.2.5npm install skeemas@1.2.5

Affected Products

1 product · 1 configurations
Application
skeemasskeemas_project
< 2018-02-22
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for skeemas, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update skeemas to 1.2.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-25074 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

A vulnerability was found in Prestaul skeemas and classified as problematic. This issue affects some unknown processing of the file validators/base.js. The manipulation of the argument uri leads to inefficient regular expression complexity. The name of the patch is 65e94eda62dc8dc148ab3e59aa2ccc086ac448fd. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-218003.
O3 Security · Impact-Aware SCA

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CVE-2018-25074: skeemas — Fixed in 1.2.5