In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial…
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmentation Fault), as demonstrated by an invalid ISALNUM argument.
Why it matters now
EPSS 0.0115 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2017-13692
- 2026-10-03 Alias added: GHSA-p4rg-78qv-f5g4
References
More HTACG Tidy vulnerabilities
- TI-2021-12836 An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g… CVSS 3.1CRITICAL 9.8
- TI-2025-05899 HTACG tidy-html5 alloc.c defaultAlloc memory leak CVSS 4.0MEDIUM 4.8
- TI-2015-04650 Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31… CVSS 2.0MEDIUM 6.8
- TI-2017-12775 In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a… CVSS 3.1HIGH 7.5
- TI-2015-04651 The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2017-13692 · CVE Program
- CVE-2017-13692 · NVD
- FIRST EPSS
- GHSA-p4rg-78qv-f5g4 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-13692 · Red Hat security data · CC BY 4.0
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