HIGH
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions
Published Nov 17, 2018
7.2
HIGHCVSS 3.1
EPSS 5.20%
Description
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.
Affected products
No data.
Configuration 2
- 8.0
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.
7.2 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
6.5 MEDIUM NVD
AV:N/AC:L/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.20% 0.05201
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05201
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (57 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.20% (0.05201) | 92.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.20% (0.05201) | 91.38th | v5 (v2026.06.15) |
| Mar 4, 2026 | 14.46% (0.14464) | 94.30th | v4 (v2025.03.14) |
| Mar 1, 2026 | 4.18% (0.04180) | 88.54th | v4 (v2025.03.14) |
| Feb 4, 2026 | 14.46% (0.14464) | 94.26th | v4 (v2025.03.14) |
| Feb 1, 2026 | 4.18% (0.04180) | 88.48th | v4 (v2025.03.14) |
| Jan 4, 2026 | 14.46% (0.14464) | 94.22th | v4 (v2025.03.14) |
| Jan 1, 2026 | 4.18% (0.04180) | 88.42th | v4 (v2025.03.14) |
| Dec 29, 2025 | 14.46% (0.14464) | 94.21th | v4 (v2025.03.14) |
| Dec 4, 2025 | 18.46% (0.18457) | 94.98th | v4 (v2025.03.14) |
| Dec 1, 2025 | 5.45% (0.05453) | 89.87th | v4 (v2025.03.14) |
| Nov 21, 2025 | 20.21% (0.20209) | 95.28th | v4 (v2025.03.14) |
| Nov 18, 2025 | 18.46% (0.18457) | 94.77th | v4 (v2025.03.14) |
| Nov 4, 2025 | 20.21% (0.20209) | 95.27th | v4 (v2025.03.14) |
| Nov 1, 2025 | 5.45% (0.05453) | 89.78th | v4 (v2025.03.14) |
| Oct 4, 2025 | 20.80% (0.20804) | 95.40th | v4 (v2025.03.14) |
| Oct 1, 2025 | 5.65% (0.05653) | 90.01th | v4 (v2025.03.14) |
| Sep 5, 2025 | 20.80% (0.20804) | 95.39th | v4 (v2025.03.14) |
| Sep 1, 2025 | 5.76% (0.05756) | 90.18th | v4 (v2025.03.14) |
| Aug 4, 2025 | 21.11% (0.21107) | 95.42th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.76% (0.05756) | 90.18th | v4 (v2025.03.14) |
| Jul 4, 2025 | 21.11% (0.21107) | 95.37th | v4 (v2025.03.14) |
| Jul 1, 2025 | 5.76% (0.05756) | 90.08th | v4 (v2025.03.14) |
| Jun 4, 2025 | 21.11% (0.21107) | 95.33th | v4 (v2025.03.14) |
| Jun 1, 2025 | 5.76% (0.05756) | 90.04th | v4 (v2025.03.14) |
| May 4, 2025 | 21.11% (0.21107) | 95.28th | v4 (v2025.03.14) |
| May 1, 2025 | 5.76% (0.05756) | 89.99th | v4 (v2025.03.14) |
| Apr 18, 2025 | 21.11% (0.21107) | 95.26th | v4 (v2025.03.14) |
| Apr 17, 2025 | 5.76% (0.05756) | 89.94th | v4 (v2025.03.14) |
| Apr 13, 2025 | 21.11% (0.21107) | 95.18th | v4 (v2025.03.14) |
| Apr 11, 2025 | 5.76% (0.05756) | 89.60th | v4 (v2025.03.14) |
| Apr 10, 2025 | 21.11% (0.21107) | 95.18th | v4 (v2025.03.14) |
| Apr 9, 2025 | 5.76% (0.05756) | 89.59th | v4 (v2025.03.14) |
| Apr 7, 2025 | 21.11% (0.21107) | 95.17th | v4 (v2025.03.14) |
| Apr 6, 2025 | 5.76% (0.05756) | 89.58th | v4 (v2025.03.14) |
| Mar 30, 2025 | 21.11% (0.21107) | 95.17th | v4 (v2025.03.14) |
| Mar 29, 2025 | 50.24% (0.50243) | 96.83th | v4 (v2025.03.14) |
| Mar 19, 2025 | 21.11% (0.21107) | 94.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 17.62% (0.17618) | 94.59th | v4 (v2025.03.14) |
| Dec 17, 2024 | 9.64% (0.09643) | 94.79th | v3 (v2023.03.01) |
| Dec 12, 2024 | 51.91% (0.51905) | 97.70th | v3 (v2023.03.01) |
| Sep 26, 2024 | 52.27% (0.52268) | 97.63th | v3 (v2023.03.01) |
| Sep 1, 2024 | 59.15% (0.59149) | 97.82th | v3 (v2023.03.01) |
| Jul 6, 2024 | 66.02% (0.66024) | 97.95th | v3 (v2023.03.01) |
| May 19, 2024 | 72.08% (0.72077) | 98.06th | v3 (v2023.03.01) |
| Apr 9, 2024 | 77.19% (0.77189) | 98.15th | v3 (v2023.03.01) |
| Nov 11, 2023 | 79.31% (0.79305) | 97.96th | v3 (v2023.03.01) |
| Jul 8, 2023 | 79.20% (0.79204) | 97.81th | v3 (v2023.03.01) |
| May 8, 2023 | 74.60% (0.74603) | 97.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 79.20% (0.79204) | 97.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.57% (0.04571) | 88.92th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.57% (0.04571) | 87.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.57% (0.04571) | 74.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.83% (0.01828) | 35.38th | v1 |
| Jan 6, 2022 | 1.83% (0.01828) | 34.69th | v1 |
| Sep 1, 2021 | 1.83% (0.01828) | 74.99th | v1 |
| Apr 14, 2021 | 1.83% (0.01828) | 0.00th | v1 |
Weaknesses (2)
References (5)
- https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution x_refsource_MISCExploitThird Party Advisory
- https://github.com/advisories/GHSA-h3mr-q96r-37v4 Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00029.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-19274
- https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/advisories/GHSA-h3mr-q96r-37v4 | Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00029.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19274 | ||
| https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 17, 2018
Updated Aug 5, 2024
Reserved Nov 14, 2018
Link CVE-2018-19274
CISA Vulnrichment
GHSA-H3MR-Q96R-37V4 Updated n/a