CVE-2026-50131

CVE-2026-50131 Fedify incomplete SSRF mitigation after GHSA-p9cg-vqcc-grcx: validatePublicUrl allowed special-use IPv4 ranges. Primary advisory: GHSA-xw9q-2mv6-9fr8 Official CVE record: CVE-2026-50131 Researcher credit: @chaitanyagarware At a Glance...

CVE-2026-62857

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. From version 1.2.0 through the affected 1.9, 1.10, 2.0, 2.1, 2.2, and 2.3 maintenance lines, getNodeInfo follows an attacker-controlled links.href value from /.well-known/nodeinfo without scheme, redirect, o...

CVE-2026-62857

Fedify: Server-Side Request Forgery via getNodeInfo() is caused by following attacker-controlled links[].href from /.well-known/nodeinfo without scheme/redirect/private-address validation. Affected: Fedify versions 1.2.0 through 1.9, 1.10, 2.0, 2.1, 2.2, 2.3 maintenance lines. Impact: may access ...

CVE-2026-62857 Fedify: Server-Side Request Forgery in getNodeInfo() Allows Access to Internal Network Resources

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. From version 1.2.0 through the affected 1.9, 1.10, 2.0, 2.1, 2.2, and 2.3 maintenance lines, getNodeInfo follows an attacker-controlled links.href value from /.well-known/nodeinfo without scheme, redirect, o...

CVE-2026-62857 Fedify: Server-Side Request Forgery in getNodeInfo() Allows Access to Internal Network Resources

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. From version 1.2.0 through the affected 1.9, 1.10, 2.0, 2.1, 2.2, and 2.3 maintenance lines, getNodeInfo follows an attacker-controlled links.href value from /.well-known/nodeinfo without scheme, redirect, o...

@fedify/cli (>=2.2.0-dev.898, <=2.2.3) potentially affected by CVE-2026-50131 via @fedify/fedify (>=2.2.0, <=2.2.3-dev.1098)

@fedify/fedify NPM version =2.2.0, =2.2.0-dev.898, =2.2.3 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

@fedify/botkit (>=0.4.0-dev.182, <=0.4.0-dev.183), @fedify/botkit-sqlite (>=0.4.0-dev.182, <=0.4.0-dev.183) +1 more potentially affected by CVE-2026-50131 via @fedify/fedify (>=2.0.0, <=2.0.18)

@fedify/fedify NPM version =2.0.0, =0.4.0-dev.182, =0.4.0-dev.182, =2.0.0-dev.1757, =2.0.18 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

GHSA-XW9Q-2MV6-9FR8 Fedify has an incomplete SSRF mitigation after GHSA-p9cg-vqcc-grcx: validatePublicUrl allows special-use IPv4 ranges

Summary Fedify previously addressed SSRF/internal network access in GHSA-p9cg-vqcc-grcx by adding public URL validation before runtime document and media fetching. However, the current IPv4 validation logic appears incomplete. The validatePublicUrl protection relies on isValidPublicIPv4Address to...

Fedify has an incomplete SSRF mitigation after GHSA-p9cg-vqcc-grcx: validatePublicUrl allows special-use IPv4 ranges

Summary Fedify previously addressed SSRF/internal network access in GHSA-p9cg-vqcc-grcx by adding public URL validation before runtime document and media fetching. However, the current IPv4 validation logic appears incomplete. The validatePublicUrl protection relies on isValidPublicIPv4Address to...

@fedify/botkit (>=0.4.0-dev.182, <=0.4.0-dev.183), @fedify/botkit-sqlite (>=0.4.0-dev.182, <=0.4.0-dev.183) +5 more potentially affected by CVE-2026-50131 via @fedify/vocab-runtime (>=2.0.0, <=2.0.18)

@fedify/vocab-runtime NPM version =2.0.0, =0.4.0-dev.182, =0.4.0-dev.182, =2.0.0-dev.1757, =2.0.0-dev.12, =2.0.0-dev.158, =2.0.0-dev.0, =2.0.0-dev.0, =2.0.18 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

@fedify/botkit (>=0.4.0-dev.184, <=0.5.0-dev.205), @fedify/botkit-sqlite (>=0.4.0-dev.184, <=0.5.0-dev.205) +5 more potentially affected by CVE-2026-50131 via @fedify/vocab-runtime (>=2.1.0, <=2.1.14)

@fedify/vocab-runtime NPM version =2.1.0, =0.4.0-dev.184, =0.4.0-dev.184, =2.1.0, =2.1.0-dev.403, =2.1.0-dev.403, =2.1.0-dev.403, =2.1.0-dev.403, =2.1.14 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

@fedify/amqp (0.2.0-dev.12), @fedify/botkit (>=0.3.0-dev.125, <=0.4.0-dev.175) +3 more potentially affected by CVE-2026-50131 via @fedify/fedify (>=1.5.0, <=1.9.2)

@fedify/fedify NPM version =1.5.0, =0.3.0-dev.125, =0.4.0-dev.167, =0.3.0-dev.20, =0.4.0-dev.18, =0.4.0 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

@fedify/botkit (>=0.4.0-dev.184, <=0.5.0-dev.205), @fedify/botkit-sqlite (>=0.4.0-dev.184, <=0.5.0-dev.205) +1 more potentially affected by CVE-2026-50131 via @fedify/fedify (>=2.1.0, <=2.1.14)

@fedify/fedify NPM version =2.1.0, =0.4.0-dev.184, =0.4.0-dev.184, =2.1.0, =2.1.14 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

EUVD-2026-36132

Fedify has an incomplete SSRF mitigation after GHSA-p9cg-vqcc-grcx: validatePublicUrl allows special-use IPv4 ranges...

@fedify/botkit (>=0.4.0-dev.177, <=0.4.0-dev.181), @fedify/botkit-sqlite (>=0.4.0-dev.177, <=0.4.0-dev.181) potentially affected by CVE-2026-50131 via @fedify/fedify (1.10.0)

@fedify/fedify NPM version 1.10.0 is affected by a known vulnerability. The following packages have a transitive dependency on @fedify/fedify and may be impacted: - @fedify/botkit =0.4.0-dev.177, =0.4.0-dev.177, =0.4.0-dev.181 Source cves: CVE-2026-50131 Source advisory: OSV:GHSA-XW9Q-2MV6-9FR8...

CVE-2026-50131

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Fedify previously addressed SSRF/internal network access in GHSA-p9cg-vqcc-grcx by adding public URL validation before runtime document and media fetching. However, the IPv4 validation logic present starting...

CVE-2026-42462

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3, an attacker can make use of JSON-LD features to restructure a JSON-LD document that would change how Fedify interprets it without changing its...

@fedify/cli (>=2.2.0-dev.898, <=2.2.3), @fedify/fedify (>=2.2.0-dev.606, <=2.2.3) +3 more potentially affected by CVE-2026-50131 via @fedify/vocab-runtime (>=2.2.0, <=2.2.3-dev.1098)

@fedify/vocab-runtime NPM version =2.2.0, =2.2.0-dev.898, =2.2.0-dev.606, =2.2.0-dev.606, =2.2.0-dev.606, =2.2.0-dev.606, =2.2.3 Source cves: CVE-2026-50131 Source advisory: SNYK:JS-FEDIFYVOCABRUNTIME-17954863...

@fedify/amqp (0.2.0-dev.12), @fedify/botkit (>=0.3.0-dev.125, <=0.4.0-dev.175) +3 more potentially affected by CVE-2026-50131 via @fedify/fedify (>=1.5.0, <=1.9.2)

@fedify/fedify NPM version =1.5.0, =0.3.0-dev.125, =0.4.0-dev.167, =0.3.0-dev.20, =0.4.0-dev.18, =0.4.0 Source cves: CVE-2026-50131 Source advisory: SNYK:JS-FEDIFYFEDIFY-17954864...

@fedify/botkit (>=0.4.0-dev.184, <=0.5.0-dev.205), @fedify/botkit-sqlite (>=0.4.0-dev.184, <=0.5.0-dev.205) +1 more potentially affected by CVE-2026-50131 via @fedify/fedify (>=2.1.0, <=2.1.14)

@fedify/fedify NPM version =2.1.0, =0.4.0-dev.184, =0.4.0-dev.184, =2.1.0, =2.1.14 Source cves: CVE-2026-50131 Source advisory: SNYK:JS-FEDIFYFEDIFY-17954864...