Apache VCL versions 2.1 through 2.5 do not properly validate form input when processing a submitted block allocation
Published Jul 29, 2019
9.8
CRITICALCVSS 3.0
EPSS 2.10%
Description
Apache VCL versions 2.1 through 2.5 do not properly validate form input when processing a submitted block allocation. The form data is then used as an argument to the php built in function strtotime. This allows for an attack against the underlying implementation of that function. The implementation of strtotime at the time the issue was discovered appeared to be resistant to a malicious attack. However, all VCL systems running versions earlier than 2.5.1 should be upgraded or patched. This vulnerability was found and reported to the Apache VCL project by ADLab of Venustech.
Affected products
-
- Version 2.1 through 2.5StatusaffectedConstraints-
- Version
- ≥ 2.1 · ≤ 2.5
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:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.10% (0.02103) | 81.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.10% (0.02103) | 79.24th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.88% (0.00877) | 73.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00230) | 62.07th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.23% (0.00230) | 61.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00327) | 66.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.85% (0.01855) | 47.92th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.85% (0.01855) | 0.00th | v1 |
References (2)
- https://lists.apache.org/thread.html/8f3284afbcb4b87ed107dac98603020c23a379c687858b41da763147%40%3Cannounce.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/db71c4edc21ecb834cf20e3ee23ffac5d37f32e7eb67257a413bf878%40%3Cdev.vcl.apache.org%3E mailing-listx_refsource_MLIST
| Link | Providers | Tags |
|---|---|---|
| https://lists.apache.org/thread.html/8f3284afbcb4b87ed107dac98603020c23a379c687858b41da763147%40%3Cannounce.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://lists.apache.org/thread.html/db71c4edc21ecb834cf20e3ee23ffac5d37f32e7eb67257a413bf878%40%3Cdev.vcl.apache.org%3E | mailing-listx_refsource_MLIST |
Change history (0)
No recorded changes yet.