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CVE-2022-31099

22
FAUCET Score

CVE-2022-31099 is a Denial of Service vulnerability affecting rulex, a regular expression language, and products utilizing it such as pomsky_lang. An attacker can trigger a stack overflow by submitting a specially crafted, deeply nested rulex expression, causing the service to crash. This medium-severity vulnerability (CVSS 6.5) requires low privileges and no user interaction, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.3CPE matchmatch criteria
cpe:2.3:a:pomsky-lang:pomsky:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 68th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: rulexFixed in: 0.4.3

Vendor Advisories (1)

rustGHSA-v78m-2q7v-fjqpmedium

Uncontrolled Recursion in rulex

Jun 22, 2022

References

github.com / rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363
PatchThird Party Advisory
github.com / rulex-rs/rulex/security/advisories/GHSA-v78m-2q7v-fjqp
Third Party Advisory