CRITICAL
install/index.php in WebCalendar before 1.2.5 allows remote attackers to execute arbitrary code via the form_single_user_login parameter
Published Jan 27, 2020
9.8
CRITICALCVSS 3.1
EPSS 79.76%
Description
install/index.php in WebCalendar before 1.2.5 allows remote attackers to execute arbitrary code via the form_single_user_login parameter.
Affected products
No data.
- < 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.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
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.
79.76% 0.79764
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.79764
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 79.76% (0.79764) | 99.60th | v5 (v2026.06.15) |
| Jun 15, 2026 | 79.76% (0.79764) | 99.56th | v5 (v2026.06.15) |
| Mar 17, 2025 | 88.48% (0.88484) | 99.48th | v4 (v2025.03.14) |
| Dec 12, 2024 | 96.99% (0.96993) | 99.80th | v3 (v2023.03.01) |
| Jul 9, 2024 | 96.98% (0.96983) | 99.76th | v3 (v2023.03.01) |
| May 22, 2024 | 97.00% (0.97001) | 99.74th | v3 (v2023.03.01) |
| Mar 23, 2024 | 96.93% (0.96932) | 99.70th | v3 (v2023.03.01) |
| Feb 20, 2024 | 97.03% (0.97033) | 99.73th | v3 (v2023.03.01) |
| Sep 10, 2023 | 97.00% (0.97004) | 99.63th | v3 (v2023.03.01) |
| Jun 9, 2023 | 96.98% (0.96984) | 99.59th | v3 (v2023.03.01) |
| May 15, 2023 | 97.11% (0.97112) | 99.63th | v3 (v2023.03.01) |
| Apr 15, 2023 | 97.19% (0.97186) | 99.66th | v3 (v2023.03.01) |
| Mar 30, 2023 | 97.21% (0.97209) | 99.67th | v3 (v2023.03.01) |
| Mar 15, 2023 | 97.22% (0.97221) | 99.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.23% (0.97228) | 99.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 83.38% (0.83379) | 99.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 83.38% (0.83379) | 99.53th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://sourceforge.net/projects/webcalendar/files/webcalendar%201.2/1.2.5/ x_refsource_MISCRelease NotesThird Party Advisory
- https://packetstormsecurity.com/files/112323/WebCalendar-1.2.4-Pre-Auth-Remote-Code-Injection.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://packetstormsecurity.com/files/112332/WebCalendar-1.2.4-Remote-Code-Execution.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/18775 x_refsource_MISCExploitThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://sourceforge.net/projects/webcalendar/files/webcalendar%201.2/1.2.5/ | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://packetstormsecurity.com/files/112323/WebCalendar-1.2.4-Pre-Auth-Remote-Code-Injection.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://packetstormsecurity.com/files/112332/WebCalendar-1.2.4-Remote-Code-Execution.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://www.exploit-db.com/exploits/18775 | x_refsource_MISCExploitThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 27, 2020
Updated Aug 6, 2024
Reserved Mar 2, 2012
Link CVE-2012-1495
CISA Vulnrichment
Updated n/a