CVE-2011-4558
CVE-2011-4558 is a high-severity vulnerability in Tiki with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 6.0
- EPSS exploit prediction: 4% (90th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-74
- Affected product: Tiki
- Published:
- Last modified:
Description
Tiki 8.2 and earlier allows remote administrators to execute arbitrary PHP code via crafted input to the regexres and regex parameters.
Frequently asked questions
- What is CVE-2011-4558?
- Tiki 8.2 and earlier allows remote administrators to execute arbitrary PHP code via crafted input to the regexres and regex parameters.
- How severe is CVE-2011-4558?
- CVE-2011-4558 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2011-4558 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2011-4558?
- CVE-2011-4558 affects Tiki. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2011-4558?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2011-4558 published?
- CVE-2011-4558 was published on 2020-01-27 and last updated on 2026-06-16.
References
Affected products (1)
- cpe:2.3:a:tiki:tiki:*:*:*:*:*:*:*:*
More vulnerabilities in Tiki
- CVE-2020-15906 — Critical (CVSS 9.8): tiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.
- CVE-2023-22850 — High (CVSS 8.8): Tiki before 24.1, when the Spreadsheets feature is enabled, allows lib/sheet/grid.php PHP Object Injection because of…
- CVE-2023-22853 — High (CVSS 8.8): Tiki before 24.1, when feature_create_webhelp is enabled, allows lib/structures/structlib.php PHP Object Injection…
- CVE-2018-7304 — High (CVSS 8.8): Tiki 17.1 does not validate user input for special characters; consequently, a CSV Injection attack can open a CMD.EXE…
- CVE-2023-22851 — High (CVSS 7.2): Tiki before 24.2 allows lib/importer/tikiimporter_blog_wordpress.php PHP Object Injection by an admin because of an…
- CVE-2023-22852 — Medium (CVSS 6.5): Tiki through 25.0 allows CSRF attacks that are related to tiki-importer.php and tiki-import_sheet.php.
Other CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities
- CVE-2026-25586 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty…
- CVE-2026-25520 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped.…
- CVE-2025-20265 — Critical (CVSS 10.0): A vulnerability in the RADIUS subsystem implementation of Cisco Secure Firewall Management Center (FMC) Software could…
- CVE-2025-20337 — Critical (CVSS 10.0): A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
- CVE-2025-20281 — Critical (CVSS 10.0): A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
- CVE-2024-42472 — Critical (CVSS 10.0): Flatpak is a Linux application sandboxing and distribution framework. Prior to versions 1.14.0 and 1.15.10, a malicious…
Browse all CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities →