MEDIUM
WordPress: Resource exhaustion (DoS)
Published Oct 23, 2009
4.3
MEDIUMCVSS 2.0
EPSS 5.83%
Description
Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.83% 0.05827
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05827
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.83% (0.05827) | 92.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.83% (0.05827) | 92.17th | v5 (v2026.06.15) |
| Apr 13, 2026 | 8.28% (0.08278) | 92.24th | v4 (v2025.03.14) |
| Jan 23, 2026 | 6.07% (0.06065) | 90.47th | v4 (v2025.03.14) |
| Dec 28, 2025 | 8.32% (0.08320) | 91.97th | v4 (v2025.03.14) |
| Dec 27, 2025 | 10.21% (0.10214) | 92.93th | v4 (v2025.03.14) |
| Oct 28, 2025 | 8.32% (0.08320) | 91.87th | v4 (v2025.03.14) |
| Oct 27, 2025 | 10.21% (0.10214) | 92.81th | v4 (v2025.03.14) |
| Oct 1, 2025 | 8.32% (0.08320) | 91.97th | v4 (v2025.03.14) |
| Aug 1, 2025 | 10.21% (0.10214) | 92.87th | v4 (v2025.03.14) |
| May 13, 2025 | 8.24% (0.08236) | 91.76th | v4 (v2025.03.14) |
| Mar 30, 2025 | 9.43% (0.09434) | 92.05th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.11% (0.02110) | 73.50th | v4 (v2025.03.14) |
| Mar 24, 2025 | 9.43% (0.09434) | 92.04th | v4 (v2025.03.14) |
| Mar 23, 2025 | 6.35% (0.06351) | 89.34th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.43% (0.09434) | 92.22th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.75% (0.04755) | 92.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.36% (0.03358) | 89.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
Weaknesses (1)
References (16)
- http://codes.zerial.org/php/wp-trackbacks_dos.phps x_refsource_MISCBroken Link
- http://marc.info/?l=oss-security&m=125612393329041&w=2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://marc.info/?l=oss-security&m=125614592004825&w=2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/ x_refsource_MISCExploitIssue TrackingVendor Advisory
- http://seclists.org/fulldisclosure/2009/Oct/263 mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory
- http://secunia.com/advisories/37088 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html x_refsource_MISCThird Party Advisory
- http://securitytracker.com/id?1023072 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/ x_refsource_CONFIRMVendor Advisory
- http://www.osvdb.org/59077 vdb-entryx_refsource_OSVDBBroken Link
- http://www.vupen.com/english/advisories/2009/2986 vdb-entryx_refsource_VUPENPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-3622 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=530056 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53884 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2009-3622
- https://www.cve.org/CVERecord?id=CVE-2009-3622
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Oct 23, 2009
Updated Aug 7, 2024
Reserved Oct 9, 2009
Link CVE-2009-3622
CISA Vulnrichment
Updated n/a