CVE-2009-3627
CVE-2009-3627 is a medium-severity vulnerability in Derrick Oswald Html-parser with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Medium (CVSS 2.0 base score 4.3)
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Derrick Oswald Html-parser
- Published:
- Last modified:
Description
The decode_entities function in util.c in HTML-Parser before 3.63 allows context-dependent attackers to cause a denial of service (infinite loop) via an incomplete SGML numeric character reference, which triggers generation of an invalid UTF-8 character.
Frequently asked questions
- What is CVE-2009-3627?
- The decode_entities function in util.c in HTML-Parser before 3.63 allows context-dependent attackers to cause a denial of service (infinite loop) via an incomplete SGML numeric character reference, which triggers generation of an invalid UTF-8 character.
- How severe is CVE-2009-3627?
- CVE-2009-3627 has a CVSS 2.0 base score of 4.3, rated medium severity.
- Is CVE-2009-3627 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-3627?
- CVE-2009-3627 primarily affects Derrick Oswald Html-parser. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2009-3627?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2009-3627 published?
- CVE-2009-3627 was published on 2009-10-29 and last updated on 2026-06-16.
References
- http://github.com/gisle/html-parser/commit/b9aae1e43eb2c8e989510187cff0ba3e996f9a4c
- http://secunia.com/advisories/37155
- http://www.openwall.com/lists/oss-security/2009/10/23/9
- http://www.securityfocus.com/bid/36807
- http://www.vupen.com/english/advisories/2009/3022
- https://bugzilla.redhat.com/show_bug.cgi?id=530604
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53941
- https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6225
Affected products (10)
- cpe:2.3:a:derrick_oswald:html-parser:*:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.00:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.1:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.2:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.3:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.4:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.5:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.6:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.41:*:*:*:*:*:*:*
- cpe:2.3:a:derrick_oswald:html-parser:1.42:*:*:*:*:*:*:*
Other CWE-20 (Improper Input Validation) vulnerabilities
- CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
- CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
- CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…
Browse all CWE-20 (Improper Input Validation) vulnerabilities →