{"answers":{"affected":"3 open source packages ship an affected version, including github.com/slack-go/slack.","exploited":"There is no known exploitation of GHSA-gxhx-2686-5h9g in the wild and no public exploit code.","fix":"Upgrade github.com/slack-go/slack to 0.23.1 or later.","what":"GHSA-gxhx-2686-5h9g is an authentication bypass vulnerability in github.com/slack-go/slack, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-gxhx-2686-5h9g and fix it if it is affected.\n\nWhat it is: GHSA-gxhx-2686-5h9g is an authentication bypass vulnerability in github.com/slack-go/slack, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-gxhx-2686-5h9g in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/slack-go/slack (Go): affected all versions; fixed in 0.23.1\n- github.com/slack-go/slack (Go): affected all versions; fixed in 0.23.1\n- github.com/slack-go/slack (Go): affected all versions; fixed in 0.23.1\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/GHSA-gxhx-2686-5h9g/ (Markdown: https://insights.sbomify.com/GHSA-gxhx-2686-5h9g/index.md)","id":"GHSA-gxhx-2686-5h9g","markdown":"https://insights.sbomify.com/GHSA-gxhx-2686-5h9g/index.md","name":"GHSA-gxhx-2686-5h9g","record":{"aliases":["GO-2026-5410"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Go Slack library","requires_auth":"none","summary":"An unauthenticated attacker can bypass Slack request authentication if the application is misconfigured with an empty signing secret.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"`SecretsVerifier` in slack-go/slack before v0.23.1 accepts an empty signing secret without error. If an application is misconfigured (e.g., an unset or empty `SLACK_SIGNING_SECRET`), `NewSecretsVerifier` builds an HMAC-SHA256 keyed with an empty string, allowing an unauthenticated attacker to forge a valid `X-Slack-Signature` and bypass Slack request authentication. Fixed in v0.23.1, which rejects empty secrets with `ErrInvalidConfiguration`. This is patched in version 0.23.1.","ecosystems":["Go"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"slack-go `SecretsVerifier` accepts empty signing secret without precondition","id":"GHSA-gxhx-2686-5h9g","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":null,"packages":[{"ecosystem":"Go","fixed":["0.23.1"],"introduced":["0"],"last_affected":[],"package":"github.com/slack-go/slack","purl":null,"source":"GHSA-gxhx-2686-5h9g"},{"ecosystem":"Go","fixed":["0.23.1"],"introduced":["0"],"last_affected":[],"package":"github.com/slack-go/slack","purl":"pkg:golang/github.com/slack-go/slack","source":"GHSA-gxhx-2686-5h9g"},{"ecosystem":"Go","fixed":["0.23.1"],"introduced":["0"],"last_affected":[],"package":"github.com/slack-go/slack","purl":"pkg:golang/github.com/slack-go/slack","source":"GO-2026-5410"}],"products":null,"published":"2026-05-14","related":[],"sources":[{"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"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"An unauthenticated attacker can bypass Slack request authentication if the application is misconfigured with an empty signing secret.","url":"https://insights.sbomify.com/GHSA-gxhx-2686-5h9g/"}