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fix(deps): update dependency undici to v8 - #7958
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This PR contains the following updates:
^7.18.2→^8.0.0Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
Release Notes
nodejs/undici (undici)
v8.12.4Compare Source
This release fixes six vulnerabilities.
CVE-2026-116592 / GHSA-mqg3-3v4r-cm32 (high)
Undici 8.12.2 and 8.12.3 could cache the final response from a redirect chain under the original request key without applying the origin, cache policy, freshness, or
Varyrequirements of every intermediate hop. This could poison a cache or expose one user's response to another user. The fix validates every redirect hop, combines theirVaryfields, limits freshness and stale serving to the most restrictive hop, and invalidates persistent SQLite entries written by vulnerable releases.CVE-2026-120474 / GHSA-7xg3-fphp-28hg (medium)
A shared cache used with
compose(redirect(), cache())could store a credential-dependent response from a same-origin redirect under the original URL. A later authenticated or unauthenticated request could then receive another user's response. Redirected requests carryingAuthorization,Cookie, orProxy-Authorizationare no longer stored under the original alias key.CVE-2026-116630 / GHSA-5rm8-gv32-r954 (medium)
A cross-origin redirect during cache revalidation could let a
304 Not Modifiedresponse from the redirect target validate a cached response from the original origin. Undici now checks that the revalidation target matches the cached URL and that any returned validator matches the stored representation before replaying the cached body.CVE-2026-120415 / GHSA-9v6h-8rgp-m69f (medium)
The redirect interceptor did not strip credentials correctly when request headers were supplied as an array of
[name, value]pairs. With a header-normalizing interceptor outsideredirect(), credentials could be sent to a cross-origin redirect target. Undici now handles both tuple arrays and flat header arrays when removing sensitive headers.CVE-2026-120222 / GHSA-3g9m-rv3r-w5w2 (medium)
A downstream handler exception during cache replay could escape as an uncaught exception or unhandled promise rejection and terminate the process. This included
dumpsize-limit failures, excessiveContent-Encodingvalues indecompress, asynchronous cache-store failures, and cached-body replay after a304. These failures are now reported as request errors.CVE-2026-120423 / GHSA-r4pc-4jcp-7pqc (medium)
fetch()could skip Subresource Integrity verification when valid integrity metadata was separated or surrounded by ASCII whitespace other than a space, including a horizontal tab. Integrity metadata is now split on all ASCII whitespace before SHA-256, SHA-384, or SHA-512 verification.What's Changed
originis optional only for origin-bound dispatchers by @attilayener in #5994New Contributors
Full Changelog: nodejs/undici@v8.12.3...v8.12.4
v8.12.3Compare Source
What's Changed
New Contributors
Full Changelog: nodejs/undici@v8.12.2...v8.12.3
v8.12.2Compare Source
Security fixes
High severity
Denial of service via TLS 1.2 certificate-changing renegotiation
CVE-2026-87018 · GHSA-qrxm-fqhp-jwvm
A malicious or compromised HTTPS server could crash the Node.js process by initiating TLS 1.2 renegotiation and presenting a different, CA-trusted certificate whose hostname did not match the requested host. The resulting socket error reached an assertion in undici's HTTP/1.1 and HTTP/2 connection handling. This release handles post-connect certificate errors without terminating the process.
TLS certificate validation bypass through dropped
AgentoptionsCVE-2026-109383 · GHSA-2m5v-pch6-74hx
Agentused a JSON-based clone for constructor options, which silently removed function-valued TLS options such ascheckServerIdentity. Applications relying on custom certificate or public-key verification could therefore accept a certificate that the callback was intended to reject. This release preserves TLS options when creating per-origin dispatchers.Cache poisoning and cross-user disclosure through cross-origin redirects
CVE-2026-109829 · GHSA-4w7w-5xrc-9h26
When an originless
Agentcombined redirect and shared-cache interceptors ascompose(redirect(), cache()), a response from a cross-origin redirect could be stored under the original URL. This could allow persistent cache poisoning or disclosure of user-specific responses to later callers. This release verifies the response origin before caching and preserves redirect-hop cache-control policy.Denial of service through excessive
Content-EncodingvaluesCVE-2026-109869 · GHSA-xjj6-f33q-929c
A malicious HTTP server could crash the Node.js process by returning more than five content codings and closing the connection before sending the body. Although
fetch()rejected the response, an error from an orphaned internal stream could remain unhandled. This release validates the content-encoding chain before creating the body stream and aborts oversized chains safely.Medium severity
Denial of service through the
decompressinterceptorCVE-2026-87029 · GHSA-55wc-3pg8-jfw6
An exception thrown by a downstream response handler from an asynchronous decompression callback could escape as an uncaught exception. A server could trigger this when
decompresswas composed with a handler such asdumpwith a size limit. This release converts downstream handler exceptions into per-request errors.Subresource Integrity bypass with non-lowercase algorithm tokens
CVE-2026-109841 · GHSA-f72v-6w45-q472
fetch()treated valid mixed-case or uppercase SRI algorithm tokens, such asSHA256, as unknown and could accept a response whose body did not match the configured digest. This release normalizes algorithm tokens before validation and digest selection.Denial of service through unbounded EventSource parser state
CVE-2026-109924 · GHSA-4qv8-2p9j-2685
A malicious Server-Sent Events endpoint could exhaust process memory by sending many tiny
data:fields without completing an event, or by splitting an unfinished line across many chunks. This release bounds retained EventSource parser state, including field counts, buffered chunks, unfinished-line length, and retained field data.Denial of service through unbounded automatic WebSocket PONG buffering
CVE-2026-109932 · GHSA-9fm3-97px-rjf6
A malicious WebSocket server could exhaust process memory by flooding the client with PING frames while not reading the automatic PONG responses. undici previously ignored socket backpressure and allowed the outbound queue to grow without bound. This release pauses frame parsing when PONG writes encounter backpressure and resumes after the socket drains.
Full Changelog: nodejs/undici@v8.12.1...v8.12.2
v8.12.1Compare Source
What's Changed
New Contributors
Full Changelog: nodejs/undici@v8.12.0...v8.12.1
v8.12.0Compare Source
What's Changed
.md->.htmlby @avivkeller in #5602New Contributors
Full Changelog: nodejs/undici@v8.11.2...v8.12.0
v8.11.2Compare Source
What's Changed
New Contributors
Full Changelog: nodejs/undici@v8.11.1...v8.11.2
v8.11.1Compare Source
What's Changed
Full Changelog: nodejs/undici@v8.11.0...v8.11.1
v8.11.0Compare Source
What's Changed
New Contributors
Full Changelog: nodejs/undici@v8.10.2...v8.11.0
v8.10.2Compare Source
High severity
BalancedPoolcould drop function-valued connection options while cloning its configuration, including custom TLS certificate validation callbacks. Undici now preservesconnectand legacytlsoptions when creating upstreams. Fixed by 8f5868fb.TypeErrorthat could terminate the process. Undici now rejects the handshake with protocol error 1002. Fixed by 66e12816.Medium severity
WebSocketStreamclose could create an unobserved rejected promise when its writable stream was locked, potentially terminating the process. Undici now propagates the failure through the retained writable stream controller. Fixed by 662d0ea6.Set-Cookie, disclosing one user's cookies to another caller. Undici now excludes these responses from shared caches, including existing entries and revalidation paths. Fixed by cb75bbb3.maxSize. Fixed by 7aac7f12.Low severity
POSTorDELETE. Undici now restricts cache reads and writes to safe methods while preserving invalidation by successful unsafe requests. Fixed by 2be07bf9.Content-Lengthwas present. Undici now enforcesmaxSizeagainst received bytes and aborts oversized responses. Fixed by 6d583124.Content-Rangeagainst the original response framing before resuming. Fixed by 0160a719.What's Changed
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