The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get URI
Published Jul 20, 2018
6.1
MEDIUMCVSS 3.0
EPSS 6.11%
Description
The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get URI. NOTE: the vendor's position is that this is not a vulnerability because the debug tools are not intended for production use. NOTE: the Symfony Debug component is used by Laravel Debugbar
Affected products
No data.
- < 2.7.33
- ≥ 2.8.0 · < 2.8.26
- ≥ 3.0.0 · < 3.2.13
- ≥ 3.3.0 · < 3.3.6
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:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
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 (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.11% (0.06107) | 93.21th | v5 (v2026.06.15) |
| Sep 22, 2026 | 6.11% (0.06107) | 93.11th | v5 (v2026.06.15) |
| Sep 21, 2026 | 14.16% (0.14162) | 96.47th | v5 (v2026.06.15) |
| Sep 6, 2026 | 6.11% (0.06107) | 92.95th | v5 (v2026.06.15) |
| Sep 5, 2026 | 14.16% (0.14162) | 96.39th | v5 (v2026.06.15) |
| Aug 30, 2026 | 6.11% (0.06107) | 92.91th | v5 (v2026.06.15) |
| Aug 28, 2026 | 14.16% (0.14162) | 96.37th | v5 (v2026.06.15) |
| Aug 24, 2026 | 6.11% (0.06107) | 92.87th | v5 (v2026.06.15) |
| Aug 23, 2026 | 14.16% (0.14162) | 96.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.11% (0.06107) | 92.48th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00090) | 38.91th | v3 (v2023.03.01) |
| May 4, 2024 | 0.09% (0.00090) | 37.97th | v3 (v2023.03.01) |
| Mar 8, 2024 | 0.13% (0.00128) | 46.60th | v3 (v2023.03.01) |
| Dec 22, 2023 | 0.14% (0.00141) | 49.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00140) | 47.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (4)
- https://github.com/barryvdh/laravel-debugbar/issues/850 x_refsource_MISCExploitThird Party Advisory
- https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c x_refsource_MISCPatchThird Party Advisory
- https://github.com/symfony/symfony/issues/27987 x_refsource_MISCExploitThird Party Advisory
- https://github.com/symfony/symfony/pull/23684 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/barryvdh/laravel-debugbar/issues/850 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985c | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/symfony/symfony/issues/27987 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/symfony/symfony/pull/23684 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.