CVE-2018-5377
CVE-2018-5377 is a critical-severity vulnerability in Discuz Discuzx with a CVSS 3.x base score of 9.8. 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-862.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-862
- Affected product: Discuz Discuzx
- Published:
- Last modified:
Description
Discuz! DiscuzX X3.4 allows remote attackers to bypass intended access restrictions via the archiver\index.php action parameter.
Frequently asked questions
- What is CVE-2018-5377?
- Discuz! DiscuzX X3.4 allows remote attackers to bypass intended access restrictions via the archiver\index.php action parameter.
- How severe is CVE-2018-5377?
- CVE-2018-5377 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-5377 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-5377?
- CVE-2018-5377 affects Discuz Discuzx. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-5377?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-5377 published?
- CVE-2018-5377 was published on 2018-01-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:discuz:discuzx:x3.4:*:*:*:*:*:*:*
More vulnerabilities in Discuz Discuzx
- CVE-2018-5259 — High (CVSS 8.8): Discuz! DiscuzX X3.4 allows remote authenticated users to bypass intended attachment-deletion restrictions via a…
- CVE-2024-30884 — High (CVSS 7.1): Reflected Cross-Site Scripting (XSS) vulnerability in Discuz! version X3.4 20220811, allows remote attackers to execute…
- CVE-2022-45543 — Medium (CVSS 6.1): Cross site scripting (XSS) vulnerability in DiscuzX 3.4 allows attackers to execute arbitrary code via the datetline,…
- CVE-2018-5376 — Medium (CVSS 6.1): Discuz! DiscuzX X3.4 has XSS via the include\spacecp\spacecp_upload.php op parameter.
- CVE-2018-5375 — Medium (CVSS 6.1): Discuz! DiscuzX X3.4 has XSS via the include\spacecp\spacecp_space.php appid parameter in a delete action.
- CVE-2018-10298 — Medium (CVSS 5.4): Discuz! DiscuzX through X3.4 has reflected XSS via forum.php?mod=post&action=newthread because…
All CVEs affecting Discuz Discuzx →
Other CWE-862 (Missing Authorization) vulnerabilities
- CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
- CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
- CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
- CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
- CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
- CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.
Browse all CWE-862 (Missing Authorization) vulnerabilities →