In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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
Published Sep 20, 2017
5.9
MEDIUMCVSS 3.0
EPSS 3.26%
Description
In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.
Affected products
-
- Version 2.5 - 2.5.5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Struts | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.26% (0.03259) | 87.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.35% (0.03347) | 87.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.60% (0.00600) | 67.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.78% (0.00776) | 82.04th | v3 (v2023.03.01) |
| Feb 9, 2024 | 0.78% (0.00776) | 80.77th | v3 (v2023.03.01) |
| May 10, 2023 | 0.78% (0.00776) | 78.76th | v3 (v2023.03.01) |
| Apr 16, 2023 | 0.83% (0.00828) | 79.52th | v3 (v2023.03.01) |
| Mar 23, 2023 | 0.58% (0.00585) | 74.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00355) | 67.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
References (6)
- http://www.securityfocus.com/bid/94657 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://github.com/advisories/GHSA-86vq-8qhc-5rqw Advisory
- https://github.com/apache/struts/commit/554b9dddb0fbd1e581ef577dd62a7c22955ad0f6
- https://nvd.nist.gov/vuln/detail/CVE-2016-8738
- https://security.netapp.com/advisory/ntap-20180629-0003/ x_refsource_CONFIRM
- https://struts.apache.org/docs/s2-044.html x_refsource_CONFIRMMitigationPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/94657 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://github.com/advisories/GHSA-86vq-8qhc-5rqw | Advisory | |
| https://github.com/apache/struts/commit/554b9dddb0fbd1e581ef577dd62a7c22955ad0f6 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2016-8738 | ||
| https://security.netapp.com/advisory/ntap-20180629-0003/ | x_refsource_CONFIRM | |
| https://struts.apache.org/docs/s2-044.html | x_refsource_CONFIRMMitigationPatchVendor Advisory |
Change history (0)
No recorded changes yet.