In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis
Published Feb 1, 2019
8.7
HIGHCVSS 4.0
EPSS 1.78%
Description
In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.
Affected products
No data.
- ≤ 1.6
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- 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 | 1.78% (0.01777) | 77.41th | v5 (v2026.06.15) |
| Jul 24, 2026 | 1.78% (0.01777) | 75.90th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00092) | 39.82th | v3 (v2023.03.01) |
| Jun 24, 2024 | 0.09% (0.00092) | 39.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00100) | 39.72th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00777) | 21.50th | v1 |
| Jan 6, 2022 | 0.78% (0.00777) | 20.90th | v1 |
| Sep 1, 2021 | 0.78% (0.00777) | 50.67th | v1 |
| Apr 14, 2021 | 0.78% (0.00777) | 0.00th | v1 |
References (6)
- https://github.com/Pylons/colander/commit/98805557c10ab5ff3016ed09aa2d48c49b9df40b
- https://github.com/Pylons/colander/issues/290 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://github.com/Pylons/colander/pull/323 x_refsource_MISCPatchThird Party Advisory
- https://github.com/advisories/GHSA-rv95-4wxj-6fqq Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/colander/PYSEC-2019-167.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2017-18361
| Link | Providers | Tags |
|---|---|---|
| https://github.com/Pylons/colander/commit/98805557c10ab5ff3016ed09aa2d48c49b9df40b | ||
| https://github.com/Pylons/colander/issues/290 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://github.com/Pylons/colander/pull/323 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/advisories/GHSA-rv95-4wxj-6fqq | Advisory | |
| https://github.com/pypa/advisory-database/tree/main/vulns/colander/PYSEC-2019-167.yaml | ||
| https://nvd.nist.gov/vuln/detail/CVE-2017-18361 |
Change history (0)
No recorded changes yet.