How severe is CVE-2023-22851?

CVE-2023-22851 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-2023-22851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22851?

CVE-2023-22851 affects Tiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-22851?

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-2023-22851 published?

CVE-2023-22851 was published on 2023-01-14 and last updated on 2026-06-17.

CVE-2023-22851

CVE-2023-22851 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Tiki
Published: 2023-01-14
Last modified: 2026-06-17

Description

Tiki before 24.2 allows lib/importer/tikiimporter_blog_wordpress.php PHP Object Injection by an admin because of an unserialize call.

Frequently asked questions

What is CVE-2023-22851?: Tiki before 24.2 allows lib/importer/tikiimporter_blog_wordpress.php PHP Object Injection by an admin because of an unserialize call.
How severe is CVE-2023-22851?: CVE-2023-22851 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-2023-22851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22851?: CVE-2023-22851 affects Tiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-22851?: 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-2023-22851 published?: CVE-2023-22851 was published on 2023-01-14 and last updated on 2026-06-17.

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-2011-4558 — High (CVSS 7.2): Tiki 8.2 and earlier allows remote administrators to execute arbitrary PHP code via crafted input to the regexres and…
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.

All CVEs affecting Tiki →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

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Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →