CVE-2021-34076
CVE-2021-34076 is a high-severity vulnerability in Phpok with a CVSS 3.x base score of 8.8. 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 8.8)
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Phpok
- Published:
- Last modified:
Description
File Upload vulnerability in PHPOK 5.7.140 allows remote attackers to run arbitrary code and gain escalated privileges via crafted zip file upload.
Frequently asked questions
- What is CVE-2021-34076?
- File Upload vulnerability in PHPOK 5.7.140 allows remote attackers to run arbitrary code and gain escalated privileges via crafted zip file upload.
- How severe is CVE-2021-34076?
- CVE-2021-34076 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-34076 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-34076?
- CVE-2021-34076 affects Phpok. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-34076?
- 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-2021-34076 published?
- CVE-2021-34076 was published on 2023-05-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:phpok:phpok:5.7.140:*:*:*:*:*:*:*
More vulnerabilities in Phpok
- CVE-2022-47129 — Critical (CVSS 9.8): PHPOK v6.3 was discovered to contain a remote code execution (RCE) vulnerability.
- CVE-2022-40889 — Critical (CVSS 9.8): Phpok 6.1 has a deserialization vulnerability via framework/phpok_call.php.
- CVE-2022-29363 — Critical (CVSS 9.8): Phpok v6.1 was discovered to contain a deserialization vulnerability via the update_f() function in login_control.php.…
- CVE-2020-18440 — Critical (CVSS 9.8): Buffer overflow vulnerability in framework/init.php in qinggan phpok 5.1, allows attackers to execute arbitrary code.
- CVE-2020-16629 — Critical (CVSS 9.8): PhpOK 5.4.137 contains a SQL injection vulnerability that can inject an attachment data through SQL, and then call the…
- CVE-2018-12491 — Critical (CVSS 9.8): PHPOK 4.9.032 has an arbitrary file upload vulnerability in the import_f function in…
Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities
- CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
- CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
- CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
- CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…
Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →