Joomla! Core is prone to a session fixation vulnerability
Published Jun 21, 2021
7.5
HIGHCVSS 3.1
EPSS 0.94%
Description
Joomla! Core is prone to a session fixation vulnerability. An attacker may leverage this issue to hijack an arbitrary session and gain access to sensitive information, which may help in launching further attacks. Joomla! Core versions 1.5.x ranging from 1.5.0 and up to and including 1.5.15 are vulnerable.
Affected products
- Vendor n/a Product Joomla Defaultn/a
- Version Joomla core from 1.5.0 up to and including 1.5.15StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Joomla | 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/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 2, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.94% (0.00944) | 59.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.94% (0.00944) | 56.26th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00006) | 0.27th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00233) | 62.28th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.23% (0.00233) | 60.62th | v3 (v2023.03.01) |
| Jan 26, 2024 | 0.21% (0.00211) | 59.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00208) | 56.91th | 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) |
References (2)
- https://developer.joomla.org/security-centre/309-20100423-core-sessation-fixation.html x_refsource_MISCVendor Advisory
- https://www.acunetix.com/vulnerabilities/web/joomla-core-1-5-x-session-fixation-1-5-0-1-5-15/ x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://developer.joomla.org/security-centre/309-20100423-core-sessation-fixation.html | x_refsource_MISCVendor Advisory | |
| https://www.acunetix.com/vulnerabilities/web/joomla-core-1-5-x-session-fixation-1-5-0-1-5-15/ | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.