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...

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...

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/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...