{"id":"CVE-2026-48736","state":"PUBLISHED","title":"Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.0 to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, NoPrivateNetworkHttpClient and IpUtils::PRIVATE_SUBNETS omitted IPv6 transition prefixes such as 6to4, NAT64, Teredo, and IPv4-compatible IPv6, allowing attacker-supplied URLs to represent private IPv4 targets in forms that IpUtils::isPrivateIp() did not block. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.","publishedAt":"2026-07-14T19:09:30.260Z","updatedAt":"2026-07-15T13:23:06.394Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["symfony symfony","symfony http-client","symfony http-foundation"],"affected":[{"vendor":"symfony","product":"symfony","versions":[{"version":">= 5.4.0, < 5.4.53","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.41","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.13","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.13","status":"affected"}]},{"vendor":"symfony","product":"http-client","versions":[{"version":">= 5.4.0, < 5.4.53","status":"affected"}]},{"vendor":"symfony","product":"http-foundation","versions":[{"version":">= 6.0.0-BETA1, < 6.4.41","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.13","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.13","status":"affected"}]}],"references":["https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755","https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2","https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e","https://github.com/symfony/symfony/releases/tag/v5.4.53","https://github.com/symfony/symfony/releases/tag/v6.4.41","https://github.com/symfony/symfony/releases/tag/v7.4.13"],"weaknesses":["CWE-184","CWE-918"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48736.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48736","state":"PUBLISHED","datePublished":"2026-07-14T19:09:30.260Z","dateUpdated":"2026-07-15T13:23:06.394Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-22T19:10:35.746Z"},"containers":{"cna":{"title":"Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient","descriptions":[{"lang":"en","value":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.0 to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, NoPrivateNetworkHttpClient and IpUtils::PRIVATE_SUBNETS omitted IPv6 transition prefixes such as 6to4, NAT64, Teredo, and IPv4-compatible IPv6, allowing attacker-supplied URLs to represent private IPv4 targets in forms that IpUtils::isPrivateIp() did not block. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13."}],"affected":[{"vendor":"symfony","product":"symfony","versions":[{"version":">= 5.4.0, < 5.4.53","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.41","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.13","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.13","status":"affected"}]},{"vendor":"symfony","product":"http-client","versions":[{"version":">= 5.4.0, < 5.4.53","status":"affected"}]},{"vendor":"symfony","product":"http-foundation","versions":[{"version":">= 6.0.0-BETA1, < 6.4.41","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.13","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.13","status":"affected"}]}],"references":[{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755","name":"https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2","name":"https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e","name":"https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v5.4.53","name":"https://github.com/symfony/symfony/releases/tag/v5.4.53","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.41","name":"https://github.com/symfony/symfony/releases/tag/v6.4.41","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.13","name":"https://github.com/symfony/symfony/releases/tag/v7.4.13","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-184","lang":"en","description":"CWE-184: Incomplete List of Disallowed Inputs","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T19:09:30.260Z"},"source":{"advisory":"GHSA-38cx-cq6f-5755","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T13:22:57.676623Z","id":"CVE-2026-48736","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T13:23:06.394Z"}}]}}}