CVE-2026-79312

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state."}], "id": "CVE-2026-79312", "lastModified": "2026-09-22T20:00:03.713", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-79312", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-22T16:01:51.271958Z", "version": "2.0.3"}}]}, "published": "2026-09-22T16:17:56.630", "references": [{"source": "cve@mitre.org", "url": "https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79312.md"}, {"source": "cve@mitre.org", "url": "https://github.com/webpy/webpy"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-384"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "python-webpy: webpy: Missing session ID rotation after authentication leads to session fixation", "id": "2537896", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2537896"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-384", "details": ["webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.", "A flaw was found in webpy. The session component reads the session identifier from the request cookie and reuses it across authentication state changes without ever rotating it. This allows a pre-authentication session identifier to persist into the authenticated session, enabling an attacker who knows that identifier to access the victim's session after they log in."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-79312", "public_date": "2026-09-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-79312\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-79312\nhttps://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79312.md\nhttps://github.com/webpy/webpy"], "statement": "Red Hat does not ship webpy in any supported product. The python-webpy package is available in EPEL, which is maintained by the Fedora community.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.76"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "webpy", "vendor": "webpy"}], "created": "2026-09-22T19:00:13.247590+00:00", "updated": "2026-09-22T19:16:12.784331+00:00", "vendors": ["webpy", "webpy$PRODUCT$webpy"]}