CVE-2023-33289 json
Withdrawn Advisory: urlnorm vulnerable to Regular Expression Denial of Service
published 2023-06-21 3 y ago modified 2026-09-10 1 mo ago also GHSA-fqhp-rhm6-8rrj , EUVD-2023-1790
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
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."
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gist.github.com https://gist.github.com/6en6ar/b118888dc739e8979038f24c8ac33611 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-1333 Inefficient Regular Expression Complexity
References
-
gist.github.com
/6en6ar/b118888dc739e8979038f24c8ac33611
web, exploit, third-party-advisory
-
github.com
/progscrape/urlnorm
package, product
-
lib.rs
/crates/urlnorm
web, product
-
news.ycombinator.com
/item?id=40435263
web
-
nvd.nist.gov
/vuln/detail/CVE-2023-33289
advisory
Sources
- CVE List CVE-2023-33289
- GitHub Advisory GHSA-fqhp-rhm6-8rrj
- NVD CVE-2023-33289
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.