CVE-2023-33289

HIGHNVD 7.57.5—

7.5

The urlnorm crate through 0.1.4 for Rust allows Regular Expression Denial of Service (ReDos) via a crafted URL to lib.rs. NOTE: the Supplier disputes this, taking the position that "Slow printing of URLs is not a CVE."

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 66.5%
KEV: Not listed

Published

June 21, 2023

Last Modified

March 8, 2025

References (7)

cve@mitrehttps://gist.github.com/6en6ar/b118888dc739e8979038f24c8ac33611
cve@mitrehttps://github.com/progscrape/urlnorm
cve@mitrehttps://lib.rs/crates/urlnorm
cve@mitrehttps://news.ycombinator.com/item?id=40435263
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/6en6ar/b118888dc739e8979038f24c8ac33611
af854a3a-2127-422b-91ae-364da2661108https://github.com/progscrape/urlnorm
af854a3a-2127-422b-91ae-364da2661108https://lib.rs/crates/urlnorm

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
rust	urlnorm	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1333Inefficient Regular Expression Complexity (ReDoS)

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-33289?

CVE-2023-33289 is a high vulnerability published on June 21, 2023. The urlnorm crate through 0.1.4 for Rust allows Regular Expression Denial of Service (ReDos) via a crafted URL to lib.rs. NOTE: the Supplier disputes this, taking the position that "Slow printing of URLs is not a CVE."

When was CVE-2023-33289 disclosed?

CVE-2023-33289 was first published in the National Vulnerability Database on June 21, 2023, with the most recent update on March 8, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-33289 actively exploited?

CVE-2023-33289 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-33289?

CVE-2023-33289 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2023-33289?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-33289, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-33289

Explore →

Is Your Infrastructure Affected by CVE-2023-33289?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs