opOpenSocialPlugin 0.8.2.1, > 0.9.9.2, 0.9.13, 1.2.6: Multiple XML External Entity Injection Vulnerabilities
CVE-2013-4335
CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 2.1%, top 16% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 82.5%
- KEV
- Not listed
Published
February 7, 2020
Last Modified
November 21, 2024
Advisory Details (3)
Auto-updated Jun 7, 2026No patch confirmed yet.
generic
oss-security - Re: CVE Request: OpenPNE 3, opWebAPIPlugin, opOpenSocialPlugin -- XXE vulnerability fix
http://www.openwall.com/lists/oss-security/2013/09/11/6Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2013-4335?
CVE-2013-4335 is a critical vulnerability published on February 7, 2020. opOpenSocialPlugin 0.8.2.1, > 0.9.9.2, 0.9.13, 1.2.6: Multiple XML External Entity Injection Vulnerabilities
When was CVE-2013-4335 disclosed?
CVE-2013-4335 was first published in the National Vulnerability Database on February 7, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-4335 actively exploited?
CVE-2013-4335 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2013-4335?
CVE-2013-4335 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2013-4335?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-4335, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2013-4335
Is Your Infrastructure Affected by CVE-2013-4335?
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