CVE-2017-9804
In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in…
- Published
- Updated
- Reserved
- Assigned by
- apache
Description
In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. NOTE: this vulnerability exists because of an incomplete fix for S2-047 / CVE-2017-7672.
Timeline
ID reserved
By apache
- 3 months later
· 3 months later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 8.2% · top 5.1% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- A regular expression Denial of Service when using URLValidator (similar to S2-044 & S2-047)
- CWE-20 (opens in a new tab)All about CWE-20 and its CVEs
Affected products
Apache Software Foundation · Apache Struts
- affected 2.3.7 - 2.3.33
- affected 2.5 - 2.5.12
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.struts:struts2-coreGHSA-x5x7-3v85-wpc4 (opens in a new tab)
References (7)
- http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20170907 Multiple Vulnerabilities in Apache Struts 2 Affecting Cisco Products: September 2017 (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 100612 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://security.netapp.com/advisory/ntap-20180629-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-003.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1039261 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://struts.apache.org/docs/s2-050.html (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-x5x7-3v85-wpc4 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-9804)Record last updated .