{"id":"EUVD-2026-58095","enisaUuid":"70bd2195-02de-314c-a065-90938bdeda4c","description":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo\u0027s `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go\u0027s `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.","datePublished":"Aug 13, 2026, 2:36:34 PM","dateUpdated":"Aug 14, 2026, 3:40:32 PM","baseScore":4.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","references":"https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c\nhttps://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md\n","aliases":"CVE-2026-49820\nGHSA-x7qq-m748-8p2c\n","assigner":"GitHub_M","epss":0.42,"enisaIdProduct":[{"id":"6f5a934d-5460-3a62-a97f-f55cded702ab","product":{"name":"probo","vendor":{"name":"getprobo"}},"product_version":"\u003c 0.193.1"}],"enisaIdVendor":[{"id":"6d634823-f731-3340-a9d5-39b47b138538","vendor":{"name":"getprobo"}}],"enisaIdVulnerability":[{"id":"16284de5-847b-33e6-a0a4-81456a795dad","vulnerability":{"id":"CVE-2026-49820","description":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo\u0027s `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go\u0027s `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.","datePublished":"Aug 13, 2026, 2:36:34 PM","dateUpdated":"Aug 14, 2026, 3:40:32 PM","status":"PUBLISHED","baseScore":4.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","references":"https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c\nhttps://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md\n","enisa_id":"EUVD-2026-58095\n","assigner":"GitHub_M","epss":0.42,"dataProcessed":"Nov 1, 2026, 7:19:35 AM","vulnerabilityProduct":[{"id":"8264f600-2930-3324-9cbb-bce0cc60e895","product":{"name":"probo","vendor":{"name":"getprobo"}},"product_version":"\u003c 0.193.1"}],"vulnerabilityVendor":[{"id":"58670e6e-f777-381a-b979-2ee805489e3a","vendor":{"name":"getprobo"}}]}},{"id":"a05df719-aef5-3393-b25e-9966674f9cf4","vulnerability":{"id":"GHSA-x7qq-m748-8p2c","description":"Probo has an open redirect bypass via path normalization","datePublished":"Jun 30, 2026, 6:31:50 PM","dateUpdated":"Jun 30, 2026, 6:31:50 PM","baseScore":0.0,"references":"https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c\nhttps://github.com/getprobo/probo\nhttps://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md\n","enisa_id":"EUVD-2026-58095\n","aliases":"GHSA-x7qq-m748-8p2c\nCVE-2026-49820\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:01:46 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}