{"cve":"CVE-2013-3926","nvd":{"published":"2013-07-01T21:55:03.090","modified":"2026-06-16T23:56:02.017","status":"Modified","description":"Atlassian Crowd 2.6.3 allows remote attackers to execute arbitrary commands via unspecified vectors related to a \"symmetric backdoor.\"  NOTE: as of 20130704, the vendor could not reproduce the issue, stating \"We've been unable to substantiate the existence of [CVE-2013-3926]. The author of the article has not contacted Atlassian and has provided no detail, making it difficult to validate the claim... If we can confirm that there is a vulnerability, a patch will be issued.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://it.slashdot.org/story/13/07/01/0011217/backdoor-discovered-in-atlassian-crowd","http://www.commandfive.com/papers/C5_TA_2013_3925_AtlassianCrowd.pdf","http://it.slashdot.org/story/13/07/01/0011217/backdoor-discovered-in-atlassian-crowd","http://www.commandfive.com/papers/C5_TA_2013_3925_AtlassianCrowd.pdf"],"products":["atlassian:crowd"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-3926","score":0.01937,"percentile":0.80083,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}