JLSEC-2026-731
- Source
- https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-731.md
- Import Source
- https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-731.json
- JSON Data
- https://api.osv.dev/v1/vulns/JLSEC-2026-731
- Upstream
- Published
- 2026-07-14T21:41:35.775Z
- Modified
- 2026-07-18T00:02:21.533378103Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- In TLSX_EchChangeSNI, the ctx->extensions branch set extensions unconditionally even when...
- Details
-
In TLSXEchChangeSNI, the ctx->extensions branch set extensions unconditionally even when TLSXFind returned NULL. This caused TLSXUseSNI to attach the attacker-controlled publicName to the shared WOLFSSLCTX when no inner SNI was configured. TLSXEchRestoreSNI then failed to clean it up because its removal was gated on serverNameX != NULL. The inner ClientHello was sized before the pollution but written after it, causing TLSXSNI_Write to memcpy 255 bytes past the allocation boundary.
- Database specific
{ "sources": [ { "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5503", "modified": "2026-06-17T10:59:08.027Z", "published": "2026-04-09T23:17:01.257Z", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5503", "imported": "2026-07-17T22:32:32.085Z", "id": "CVE-2026-5503", "database_specific": { "status": "Analyzed" } }, { "url": "https://api.github.com/advisories/GHSA-65xm-pfx9-g5p3", "html_url": "https://github.com/advisories/GHSA-65xm-pfx9-g5p3", "id": "GHSA-65xm-pfx9-g5p3", "imported": "2026-07-17T22:32:32.246Z", "published": "2026-04-10T00:30:31Z", "modified": "2026-04-27T18:32:02Z" }, { "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-21234", "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21234", "imported": "2026-07-17T22:32:42.161Z", "modified": "2026-04-10T17:58:51Z", "published": "2026-04-09T22:35:39Z", "id": "EUVD-2026-21234" } ], "license": "CC-BY-4.0" }- References