{"answers":{"affected":"3 open source packages ship an affected version, including go.probo.inc/probo.","exploited":"There is no known exploitation of CVE-2026-49820 in the wild and no public exploit code.","fix":"Upgrade go.probo.inc/probo to 0.204.0 or later.","what":"CVE-2026-49820 is a medium-severity vulnerability in getprobo probo, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-49820 and fix it if it is affected.\n\nWhat it is: CVE-2026-49820 is a medium-severity vulnerability in getprobo probo, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-49820 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- go.probo.inc/probo (Go): affected all versions; fixed in 0.204.0\n- go.probo.inc/probo (Go): affected all versions; fixed in 0.204.0\n- go.probo.inc/probo (Go): affected all versions; fixed in 0.204.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-49820/ (Markdown: https://insights.sbomify.com/CVE-2026-49820/index.md)","id":"CVE-2026-49820","markdown":"https://insights.sbomify.com/CVE-2026-49820/index.md","name":"CVE-2026-49820","record":{"aliases":["GHSA-x7qq-m748-8p2c","GO-2026-5861"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"GRC platform","requires_auth":"none","summary":"Attackers can bypass redirect validation to send users to malicious sites via crafted URLs, enabling phishing attacks against Probo users.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo's `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's `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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Probo has an open redirect bypass via path normalization","id":"CVE-2026-49820","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Fission: Cross-namespace Environment reference in Package allows build-time command execution and SA token exfiltration","id":"CVE-2026-49821"},"packages":[{"ecosystem":"Go","fixed":["0.204.0"],"introduced":["0"],"last_affected":[],"package":"go.probo.inc/probo","purl":null,"source":"GHSA-x7qq-m748-8p2c"},{"ecosystem":"Go","fixed":["0.204.0"],"introduced":["0"],"last_affected":[],"package":"go.probo.inc/probo","purl":"pkg:golang/go.probo.inc/probo","source":"GHSA-x7qq-m748-8p2c"},{"ecosystem":"Go","fixed":["0.204.0"],"introduced":["0"],"last_affected":[],"package":"go.probo.inc/probo","purl":"pkg:golang/go.probo.inc/probo","source":"GO-2026-5861"}],"prev":{"headline":"UpSnap - Unauthenticated Initial-Superuser Takeover Chains to Root RCE via wake_cmd","id":"CVE-2026-49819"},"products":["probo"],"published":"2026-08-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-14","vendors":["getprobo"]},"summary":"Attackers can bypass redirect validation to send users to malicious sites via crafted URLs, enabling phishing attacks against Probo users.","url":"https://insights.sbomify.com/CVE-2026-49820/"}