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CVE-2026-88011

Traefik: ForwardAuth identity spoofing via dot-form header alias

5.3 MediumFix available

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
None

Exploit likelihood

0.42%Up 0.2 points since Sep 11, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

Traefik: ForwardAuth identity spoofing via dot-form header alias

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.

Record
CVE-2026-88011
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-290
Updated
2026-11-02
EUVDEUVD-2026-75584 5.3

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.

Record
EUVD-2026-75584
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-rf44-j88r-hh8c 5.3

Traefik: ForwardAuth identity spoofing via dot-form header alias

Summary

There is a medium severity vulnerability in Traefik's handling of request headers whose name aliases another header name. Go canonicalizes header names on dashes only, so X-Auth-User, X_Auth_User and X.Auth.User are three distinct headers to Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX, and others) collapse all of them into the same variable. A client can therefore smuggle an alias of a header that Traefik manages past the middleware managing it — for example a dot-form X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — and have such a backend read the client-supplied value instead of the identity Traefik asserted. Any header Traefik sets is exposed, not only ForwardAuth's. This is an incomplete-fix sibling of GHSA-x677-9fxg-v5c5, which blocked only the underscore form.

The mitigation is the new aliasHeadersStrategy entry point option. It defaults to keep, which preserves the previous behavior for backwards compatibility, so it must be explicitly set to delete or reject to take effect.

Traefik v1.x, the v2 releases up to v2.11.55 and the v3 releases from v3.0.0 to v3.7.11 are affected. The unmaintained lines among them will not receive a patch of their own, and the remedy for their users is to upgrade to v2.11.56 or v3.7.12 and set aliasHeadersStrategy.

Patches

For more information

If you have any questions or comments about this advisory, please open an issue.

<details> <summary>Original Description</summary>

Summary

Traefik's ForwardAuth middleware removes the configured canonical identity header before copying the value returned by the auth service. However, a client-supplied dot-form alias such as X.Authenticated.User survives both this replacement and underscoreHeadersStrategy: delete.

The tested PHP 8.2 built-in SAPI maps X-Authenticated-User and X.Authenticated.User to the same HTTP_X_AUTHENTICATED_USER server variable. In Traefik's tested HTTP/1 backend path, the client value is serialized last and overrides the identity asserted by ForwardAuth.

A client whom ForwardAuth permits as a lower-privilege identity can therefore be treated by the backend as another user or role.

Details

At v3.7.10, pkg/server/server_entrypoint_tcp.go:800-818 removes or rejects only names containing _. After successful authentication, pkg/middlewares/auth/forward.go:314-326 deletes and replaces only the canonical authResponseHeaders key. The dot alias remains in req.Header and the standard reverse proxy forwards both legal field names.

Go's HTTP/1 writer sorts header names lexically, placing X-Authenticated-User before X.Authenticated.User. PHP then collapses both into one $_SERVER key, so the attacker value deterministically wins.

This is an incomplete-fix sibling of GHSA-x677-9fxg-v5c5: the published underscore input is blocked by the new entry-point strategy, while the dot input bypasses that mitigation on the current stable release.

PoC

traefik-dot-forwardauth-poc.zip

run:

docker compose up -d
bash verify.sh
docker compose down

The decisive request is:

GET /probe HTTP/1.1
Host: 127.0.0.1:18080
X.Authenticated.User: admin
Connection: close

Expected backend identity: lab-user, as returned by ForwardAuth.

Observed on v3.7.10: admin.

The script also verifies that requests without the alias, with the canonical header, and with the already-fixed underscore alias all produce lab-user.

Impact

Applications that authorize requests using a ForwardAuth-provided identity header can receive an attacker-selected username or role instead. This was runtime-verified with PHP…

Record
GHSA-rf44-j88r-hh8c
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-290
Updated
2026-11-02
NVD 5.3

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.

Record
CVE-2026-88011
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-290
Updated
2026-11-02
OSV 5.3

Traefik: ForwardAuth identity spoofing via dot-form header alias

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.

Record
CVE-2026-88011
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-290
Updated
2026-11-02
OSVCVE-2026-88879 5.3

Traefik before v2.11.56 Identity Spoofing via Header Alias

Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, X_Auth_User and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX and others) collapse them into a single variable. A client can therefore smuggle a dot-form alias of a header that Traefik manages past the middleware managing it — for example supplying X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — causing such a backend to read the client-supplied value instead of the identity Traefik asserted. In the tested configuration (PHP 8.2 built-in SAPI over an HTTP/1 backend path), Go's lexical header ordering makes the attacker-supplied value win deterministically, so a client that ForwardAuth admits as a low-privilege identity can be treated by the backend as a different user or role. Any header Traefik sets is affected, not only ForwardAuth's. This is an incomplete fix for GHSA-x677-9fxg-v5c5, which blocked only the underscore form. Fixed in v2.11.56 and v3.7.12, which add the aliasHeadersStrategy entry-point option; because it defaults to 'keep' for backwards compatibility, it must be explicitly set to 'delete' or 'reject' for the fix to take effect. Unmaintained release lines will not receive a patch.

Record
CVE-2026-88879
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-290
Updated
2026-11-02
Show 5 moreShow less
OSVGHSA-rf44-j88r-hh8c 5.3

Traefik: ForwardAuth identity spoofing via dot-form header alias

Summary

There is a medium severity vulnerability in Traefik's handling of request headers whose name aliases another header name. Go canonicalizes header names on dashes only, so X-Auth-User, X_Auth_User and X.Auth.User are three distinct headers to Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX, and others) collapse all of them into the same variable. A client can therefore smuggle an alias of a header that Traefik manages past the middleware managing it — for example a dot-form X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — and have such a backend read the client-supplied value instead of the identity Traefik asserted. Any header Traefik sets is exposed, not only ForwardAuth's. This is an incomplete-fix sibling of GHSA-x677-9fxg-v5c5, which blocked only the underscore form.

The mitigation is the new aliasHeadersStrategy entry point option. It defaults to keep, which preserves the previous behavior for backwards compatibility, so it must be explicitly set to delete or reject to take effect.

Traefik v1.x, the v2 releases up to v2.11.55 and the v3 releases from v3.0.0 to v3.7.11 are affected. The unmaintained lines among them will not receive a patch of their own, and the remedy for their users is to upgrade to v2.11.56 or v3.7.12 and set aliasHeadersStrategy.

Patches

For more information

If you have any questions or comments about this advisory, please open an issue.

<details> <summary>Original Description</summary>

Summary

Traefik's ForwardAuth middleware removes the configured canonical identity header before copying the value returned by the auth service. However, a client-supplied dot-form alias such as X.Authenticated.User survives both this replacement and underscoreHeadersStrategy: delete.

The tested PHP 8.2 built-in SAPI maps X-Authenticated-User and X.Authenticated.User to the same HTTP_X_AUTHENTICATED_USER server variable. In Traefik's tested HTTP/1 backend path, the client value is serialized last and overrides the identity asserted by ForwardAuth.

A client whom ForwardAuth permits as a lower-privilege identity can therefore be treated by the backend as another user or role.

Details

At v3.7.10, pkg/server/server_entrypoint_tcp.go:800-818 removes or rejects only names containing _. After successful authentication, pkg/middlewares/auth/forward.go:314-326 deletes and replaces only the canonical authResponseHeaders key. The dot alias remains in req.Header and the standard reverse proxy forwards both legal field names.

Go's HTTP/1 writer sorts header names lexically, placing X-Authenticated-User before X.Authenticated.User. PHP then collapses both into one $_SERVER key, so the attacker value deterministically wins.

This is an incomplete-fix sibling of GHSA-x677-9fxg-v5c5: the published underscore input is blocked by the new entry-point strategy, while the dot input bypasses that mitigation on the current stable release.

PoC

traefik-dot-forwardauth-poc.zip

run:

docker compose up -d
bash verify.sh
docker compose down

The decisive request is:

GET /probe HTTP/1.1
Host: 127.0.0.1:18080
X.Authenticated.User: admin
Connection: close

Expected backend identity: lab-user, as returned by ForwardAuth.

Observed on v3.7.10: admin.

The script also verifies that requests without the alias, with the canonical header, and with the already-fixed underscore alias all produce lab-user.

Impact

Applications that authorize requests using a ForwardAuth-provided identity header can receive an attacker-selected username or role instead. This was runtime-verified with PHP…

Record
GHSA-rf44-j88r-hh8c
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-290
Updated
2026-11-02
OSVGO-2026-6455 No score

Traefik: ForwardAuth identity spoofing via dot-form header alias in github.com/traefik/traefik

Traefik: ForwardAuth identity spoofing via dot-form header alias in github.com/traefik/traefik

Record
GO-2026-6455
Updated
2026-11-02
OSVopenSUSE-SU-2026:21897-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

Changes for govulncheck-vulndb:

  • Update to version 0.0.20260916T180043 2026-09-16T18:00:43Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6348 CVE-2026-84304 GHSA-vp52-pcj8-j9qc
  • GO-2026-6356 CVE-2026-65959 GHSA-mhc4-g3wh-cw7m
  • GO-2026-6366 CVE-2026-61625 GHSA-8q3c-rjr9-xxrp
  • GO-2026-6372 CVE-2026-79921 GHSA-6c5v-hqjr-5xxp
  • GO-2026-6441 CVE-2026-84303 GHSA-qc2q-p7wx-3px3
  • GO-2026-6443 CVE-2026-84445 GHSA-2v4p-qf9q-27wj
  • GO-2026-6444 CVE-2026-53495 GHSA-7jxh-36q5-gcqv
  • GO-2026-6445 CVE-2025-58363 GHSA-c23q-fw86-9h5x
  • GO-2026-6446 CVE-2025-24978 GHSA-g8rh-fjm6-h2h9
  • GO-2026-6447 CVE-2025-24979 GHSA-pqqc-8v73-9gg2
  • GO-2026-6448 CVE-2026-59185 GHSA-cp3j-m783-3ph5
  • GO-2026-6449 GHSA-hxjg-93wc-h8p8
  • GO-2026-6450 CVE-2026-59172 GHSA-m835-3cm9-rggg
  • GO-2026-6451 CVE-2026-59157 GHSA-v25g-mvwr-f5fp
  • GO-2026-6452 CVE-2026-59162 GHSA-fx5j-qcqg-grpf
  • GO-2026-6453 CVE-2026-59161 GHSA-q5j5-6p94-4gwc
  • GO-2026-6454 CVE-2026-88012 GHSA-7ghq-v6jf-g56c
  • GO-2026-6455 CVE-2026-88011 GHSA-rf44-j88r-hh8c
  • GO-2026-6456 CVE-2026-88045 GHSA-2p48-j3qc-rx9f
  • GO-2026-6457 CVE-2026-88046 GHSA-38xv-hf3p-h7mq
  • GO-2026-6458 CVE-2026-88017 GHSA-c476-6w5q-jw77
  • GO-2026-6459 CVE-2026-88016 GHSA-f8g7-2xjc-7mfh
  • GO-2026-6460 CVE-2026-88044 GHSA-p569-5gjg-9cmj
  • GO-2026-6461 CVE-2026-88015 GHSA-p6m2-r3w9-mpxw
  • GO-2026-6462 CVE-2026-88018 GHSA-xwwr-4h3p-r22c
  • GO-2026-6463 CVE-2026-88013 GHSA-486v-q2wf-fp2r
  • GO-2026-6464 CVE-2026-88014 GHSA-66hp-wgxq-6f5q
  • GO-2026-6465 CVE-2026-88009 GHSA-f52w-8j3h-j724
  • GO-2026-6466 CVE-2026-88007 GHSA-qqjf-53cj-pwvv
  • GO-2026-6467 CVE-2026-88004 GHSA-v67p-phpq-fc8x
  • GO-2026-6468 CVE-2026-88008 GHSA-w4v4-9rw7-5326
  • GO-2026-6469 CVE-2026-56665 GHSA-v77h-2w3m-94hx
  • GO-2026-6470 CVE-2026-56666 GHSA-992q-9gwp-7r79
  • GO-2026-6473 CVE-2026-76081 GHSA-v859-c572-qh5p
  • GO-2026-6474 CVE-2026-56668 GHSA-vrh8-c9cm-wh8v
  • Update to version 0.0.20260910T144842 2026-09-10T14:48:42Z.
  • GO-2026-6302 GHSA-mf7q-r4rv-jv94
  • GO-2026-6343 CVE-2026-25782 GHSA-qm72-8prh-g92x
  • GO-2026-6344 CVE-2026-26292 GHSA-rc56-rj3f-xggf
  • GO-2026-6345 CVE-2026-27779 GHSA-v8f2-2ghq-9whv
  • GO-2026-6346 CVE-2026-27780 GHSA-vhq7-fwwh-7hjf
  • GO-2026-6347 CVE-2026-27660 GHSA-x92v-f5gc-r34v
  • GO-2026-6350 CVE-2026-59832 GHSA-275h-v5h9-vr82
  • GO-2026-6351 CVE-2026-72920 GHSA-2v6v-25fm-p4fg
  • GO-2026-6353 CVE-2026-59834 GHSA-h89q-4j2h-7h88
  • GO-2026-6357 CVE-2026-73667 GHSA-2mw5-23gm-pccq
  • GO-2026-6358 CVE-2026-73841 GHSA-52gf-6rpq-fgmx
  • GO-2026-6359 CVE-2026-67446 GHSA-75mr-qw9x-3r39
  • GO-2026-6360 CVE-2026-73840 GHSA-c5f6-2rm9-2w8g
  • GO-2026-6361 CVE-2026-72921 GHSA-gv5w-hfx8-8cwq
  • GO-2026-6362 CVE-2026-73843 GHSA-qh9r-j7rp-4x2m
  • GO-2026-6363 CVE-2026-67445 GHSA-w878-pj84-3j5v
  • GO-2026-6364 GHSA-99rq-75j6-5j9f
  • GO-2026-6365 GHSA-gw25-m53r-qh88
  • GO-2026-6367 CVE-2026-56743 GHSA-fm8w-2m5w-9j7r
  • GO-2026-6368 CVE-2026-75602 GHSA-h6cj-26g5-67fv
  • GO-2026-6369 CVE-2026-73232 GHSA-jcvh-xf52-2cwm
  • GO-2026-6370 CVE-2026-73292 GHSA-8cj9-r88m-8945
  • GO-2026-6371 CVE-2026-73293 GHSA-cxvf-gvfq-36w2
  • GO-2026-6373 CVE-2026-69086 GHSA-7hm9-v7vf-7g4w
  • GO-2026-6374 CVE-2026-69083 GHSA-fph3-ghq9-vw66
  • GO-2026-6377 CVE-2026-69084 GHSA-vh22-h7hf-www7
  • GO-2026-6379 CVE-2026-68586 GHSA-36v8-mpjm-8j5r
  • GO-2026-6381 CVE-2026-68587 GHSA-69mh-gvh4-8gp7
  • GO-2026-6382 CVE-2026-68584 GHSA-7j72-f6wg-cxw6
  • GO-2026-6384 CVE-2026-68585 GHSA-pm3w-vxp9-ccwc
  • GO-2026-6386 CVE-2026-72809 GHSA-3mp7-4rh5-jrv9
  • GO-2026-6387 CVE-2026-72805 GHSA-67x2-mq63-v9vm
  • GO-2026-6388 CVE-2026-72806 GHSA-6mcf-g667-w3qv
  • GO-2026-6392 CVE-2026-72801 GHSA-8x84-r2ff-h8pq
  • GO-2026-6395 CVE-2026-72800 GHSA-5fhr-f75j-8wr9
  • GO-2026-6398 CVE-2026-72802 GHSA-jv8v-xq2h-657v
  • GO-2026-6400 CVE-2026-72810 GHSA-mw8r-mw84-88v2
  • GO-2026-6402 CVE-2026-72811 GHSA-q2vg-7qgx-x5fc
  • GO-2026-6404 CVE-2026-72803…
Record
openSUSE-SU-2026:21897-1
Updated
2026-11-02
OSVSUSE-SU-2026:23855-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

Changes for govulncheck-vulndb:

  • Update to version 0.0.20260916T180043 2026-09-16T18:00:43Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6348 CVE-2026-84304 GHSA-vp52-pcj8-j9qc
  • GO-2026-6356 CVE-2026-65959 GHSA-mhc4-g3wh-cw7m
  • GO-2026-6366 CVE-2026-61625 GHSA-8q3c-rjr9-xxrp
  • GO-2026-6372 CVE-2026-79921 GHSA-6c5v-hqjr-5xxp
  • GO-2026-6441 CVE-2026-84303 GHSA-qc2q-p7wx-3px3
  • GO-2026-6443 CVE-2026-84445 GHSA-2v4p-qf9q-27wj
  • GO-2026-6444 CVE-2026-53495 GHSA-7jxh-36q5-gcqv
  • GO-2026-6445 CVE-2025-58363 GHSA-c23q-fw86-9h5x
  • GO-2026-6446 CVE-2025-24978 GHSA-g8rh-fjm6-h2h9
  • GO-2026-6447 CVE-2025-24979 GHSA-pqqc-8v73-9gg2
  • GO-2026-6448 CVE-2026-59185 GHSA-cp3j-m783-3ph5
  • GO-2026-6449 GHSA-hxjg-93wc-h8p8
  • GO-2026-6450 CVE-2026-59172 GHSA-m835-3cm9-rggg
  • GO-2026-6451 CVE-2026-59157 GHSA-v25g-mvwr-f5fp
  • GO-2026-6452 CVE-2026-59162 GHSA-fx5j-qcqg-grpf
  • GO-2026-6453 CVE-2026-59161 GHSA-q5j5-6p94-4gwc
  • GO-2026-6454 CVE-2026-88012 GHSA-7ghq-v6jf-g56c
  • GO-2026-6455 CVE-2026-88011 GHSA-rf44-j88r-hh8c
  • GO-2026-6456 CVE-2026-88045 GHSA-2p48-j3qc-rx9f
  • GO-2026-6457 CVE-2026-88046 GHSA-38xv-hf3p-h7mq
  • GO-2026-6458 CVE-2026-88017 GHSA-c476-6w5q-jw77
  • GO-2026-6459 CVE-2026-88016 GHSA-f8g7-2xjc-7mfh
  • GO-2026-6460 CVE-2026-88044 GHSA-p569-5gjg-9cmj
  • GO-2026-6461 CVE-2026-88015 GHSA-p6m2-r3w9-mpxw
  • GO-2026-6462 CVE-2026-88018 GHSA-xwwr-4h3p-r22c
  • GO-2026-6463 CVE-2026-88013 GHSA-486v-q2wf-fp2r
  • GO-2026-6464 CVE-2026-88014 GHSA-66hp-wgxq-6f5q
  • GO-2026-6465 CVE-2026-88009 GHSA-f52w-8j3h-j724
  • GO-2026-6466 CVE-2026-88007 GHSA-qqjf-53cj-pwvv
  • GO-2026-6467 CVE-2026-88004 GHSA-v67p-phpq-fc8x
  • GO-2026-6468 CVE-2026-88008 GHSA-w4v4-9rw7-5326
  • GO-2026-6469 CVE-2026-56665 GHSA-v77h-2w3m-94hx
  • GO-2026-6470 CVE-2026-56666 GHSA-992q-9gwp-7r79
  • GO-2026-6473 CVE-2026-76081 GHSA-v859-c572-qh5p
  • GO-2026-6474 CVE-2026-56668 GHSA-vrh8-c9cm-wh8v
  • Update to version 0.0.20260910T144842 2026-09-10T14:48:42Z.
  • GO-2026-6302 GHSA-mf7q-r4rv-jv94
  • GO-2026-6343 CVE-2026-25782 GHSA-qm72-8prh-g92x
  • GO-2026-6344 CVE-2026-26292 GHSA-rc56-rj3f-xggf
  • GO-2026-6345 CVE-2026-27779 GHSA-v8f2-2ghq-9whv
  • GO-2026-6346 CVE-2026-27780 GHSA-vhq7-fwwh-7hjf
  • GO-2026-6347 CVE-2026-27660 GHSA-x92v-f5gc-r34v
  • GO-2026-6350 CVE-2026-59832 GHSA-275h-v5h9-vr82
  • GO-2026-6351 CVE-2026-72920 GHSA-2v6v-25fm-p4fg
  • GO-2026-6353 CVE-2026-59834 GHSA-h89q-4j2h-7h88
  • GO-2026-6357 CVE-2026-73667 GHSA-2mw5-23gm-pccq
  • GO-2026-6358 CVE-2026-73841 GHSA-52gf-6rpq-fgmx
  • GO-2026-6359 CVE-2026-67446 GHSA-75mr-qw9x-3r39
  • GO-2026-6360 CVE-2026-73840 GHSA-c5f6-2rm9-2w8g
  • GO-2026-6361 CVE-2026-72921 GHSA-gv5w-hfx8-8cwq
  • GO-2026-6362 CVE-2026-73843 GHSA-qh9r-j7rp-4x2m
  • GO-2026-6363 CVE-2026-67445 GHSA-w878-pj84-3j5v
  • GO-2026-6364 GHSA-99rq-75j6-5j9f
  • GO-2026-6365 GHSA-gw25-m53r-qh88
  • GO-2026-6367 CVE-2026-56743 GHSA-fm8w-2m5w-9j7r
  • GO-2026-6368 CVE-2026-75602 GHSA-h6cj-26g5-67fv
  • GO-2026-6369 CVE-2026-73232 GHSA-jcvh-xf52-2cwm
  • GO-2026-6370 CVE-2026-73292 GHSA-8cj9-r88m-8945
  • GO-2026-6371 CVE-2026-73293 GHSA-cxvf-gvfq-36w2
  • GO-2026-6373 CVE-2026-69086 GHSA-7hm9-v7vf-7g4w
  • GO-2026-6374 CVE-2026-69083 GHSA-fph3-ghq9-vw66
  • GO-2026-6377 CVE-2026-69084 GHSA-vh22-h7hf-www7
  • GO-2026-6379 CVE-2026-68586 GHSA-36v8-mpjm-8j5r
  • GO-2026-6381 CVE-2026-68587 GHSA-69mh-gvh4-8gp7
  • GO-2026-6382 CVE-2026-68584 GHSA-7j72-f6wg-cxw6
  • GO-2026-6384 CVE-2026-68585 GHSA-pm3w-vxp9-ccwc
  • GO-2026-6386 CVE-2026-72809 GHSA-3mp7-4rh5-jrv9
  • GO-2026-6387 CVE-2026-72805 GHSA-67x2-mq63-v9vm
  • GO-2026-6388 CVE-2026-72806 GHSA-6mcf-g667-w3qv
  • GO-2026-6392 CVE-2026-72801 GHSA-8x84-r2ff-h8pq
  • GO-2026-6395 CVE-2026-72800 GHSA-5fhr-f75j-8wr9
  • GO-2026-6398 CVE-2026-72802 GHSA-jv8v-xq2h-657v
  • GO-2026-6400 CVE-2026-72810 GHSA-mw8r-mw84-88v2
  • GO-2026-6402 CVE-2026-72811 GHSA-q2vg-7qgx-x5fc
  • GO-2026-6404 CVE-2026-72803…
Record
SUSE-SU-2026:23855-1
Updated
2026-11-02
OSVSUSE-SU-2026:23863-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

Changes for govulncheck-vulndb:

  • Update to version 0.0.20260916T180043 2026-09-16T18:00:43Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-6348 CVE-2026-84304 GHSA-vp52-pcj8-j9qc
  • GO-2026-6356 CVE-2026-65959 GHSA-mhc4-g3wh-cw7m
  • GO-2026-6366 CVE-2026-61625 GHSA-8q3c-rjr9-xxrp
  • GO-2026-6372 CVE-2026-79921 GHSA-6c5v-hqjr-5xxp
  • GO-2026-6441 CVE-2026-84303 GHSA-qc2q-p7wx-3px3
  • GO-2026-6443 CVE-2026-84445 GHSA-2v4p-qf9q-27wj
  • GO-2026-6444 CVE-2026-53495 GHSA-7jxh-36q5-gcqv
  • GO-2026-6445 CVE-2025-58363 GHSA-c23q-fw86-9h5x
  • GO-2026-6446 CVE-2025-24978 GHSA-g8rh-fjm6-h2h9
  • GO-2026-6447 CVE-2025-24979 GHSA-pqqc-8v73-9gg2
  • GO-2026-6448 CVE-2026-59185 GHSA-cp3j-m783-3ph5
  • GO-2026-6449 GHSA-hxjg-93wc-h8p8
  • GO-2026-6450 CVE-2026-59172 GHSA-m835-3cm9-rggg
  • GO-2026-6451 CVE-2026-59157 GHSA-v25g-mvwr-f5fp
  • GO-2026-6452 CVE-2026-59162 GHSA-fx5j-qcqg-grpf
  • GO-2026-6453 CVE-2026-59161 GHSA-q5j5-6p94-4gwc
  • GO-2026-6454 CVE-2026-88012 GHSA-7ghq-v6jf-g56c
  • GO-2026-6455 CVE-2026-88011 GHSA-rf44-j88r-hh8c
  • GO-2026-6456 CVE-2026-88045 GHSA-2p48-j3qc-rx9f
  • GO-2026-6457 CVE-2026-88046 GHSA-38xv-hf3p-h7mq
  • GO-2026-6458 CVE-2026-88017 GHSA-c476-6w5q-jw77
  • GO-2026-6459 CVE-2026-88016 GHSA-f8g7-2xjc-7mfh
  • GO-2026-6460 CVE-2026-88044 GHSA-p569-5gjg-9cmj
  • GO-2026-6461 CVE-2026-88015 GHSA-p6m2-r3w9-mpxw
  • GO-2026-6462 CVE-2026-88018 GHSA-xwwr-4h3p-r22c
  • GO-2026-6463 CVE-2026-88013 GHSA-486v-q2wf-fp2r
  • GO-2026-6464 CVE-2026-88014 GHSA-66hp-wgxq-6f5q
  • GO-2026-6465 CVE-2026-88009 GHSA-f52w-8j3h-j724
  • GO-2026-6466 CVE-2026-88007 GHSA-qqjf-53cj-pwvv
  • GO-2026-6467 CVE-2026-88004 GHSA-v67p-phpq-fc8x
  • GO-2026-6468 CVE-2026-88008 GHSA-w4v4-9rw7-5326
  • GO-2026-6469 CVE-2026-56665 GHSA-v77h-2w3m-94hx
  • GO-2026-6470 CVE-2026-56666 GHSA-992q-9gwp-7r79
  • GO-2026-6473 CVE-2026-76081 GHSA-v859-c572-qh5p
  • GO-2026-6474 CVE-2026-56668 GHSA-vrh8-c9cm-wh8v
  • Update to version 0.0.20260910T144842 2026-09-10T14:48:42Z.
  • GO-2026-6302 GHSA-mf7q-r4rv-jv94
  • GO-2026-6343 CVE-2026-25782 GHSA-qm72-8prh-g92x
  • GO-2026-6344 CVE-2026-26292 GHSA-rc56-rj3f-xggf
  • GO-2026-6345 CVE-2026-27779 GHSA-v8f2-2ghq-9whv
  • GO-2026-6346 CVE-2026-27780 GHSA-vhq7-fwwh-7hjf
  • GO-2026-6347 CVE-2026-27660 GHSA-x92v-f5gc-r34v
  • GO-2026-6350 CVE-2026-59832 GHSA-275h-v5h9-vr82
  • GO-2026-6351 CVE-2026-72920 GHSA-2v6v-25fm-p4fg
  • GO-2026-6353 CVE-2026-59834 GHSA-h89q-4j2h-7h88
  • GO-2026-6357 CVE-2026-73667 GHSA-2mw5-23gm-pccq
  • GO-2026-6358 CVE-2026-73841 GHSA-52gf-6rpq-fgmx
  • GO-2026-6359 CVE-2026-67446 GHSA-75mr-qw9x-3r39
  • GO-2026-6360 CVE-2026-73840 GHSA-c5f6-2rm9-2w8g
  • GO-2026-6361 CVE-2026-72921 GHSA-gv5w-hfx8-8cwq
  • GO-2026-6362 CVE-2026-73843 GHSA-qh9r-j7rp-4x2m
  • GO-2026-6363 CVE-2026-67445 GHSA-w878-pj84-3j5v
  • GO-2026-6364 GHSA-99rq-75j6-5j9f
  • GO-2026-6365 GHSA-gw25-m53r-qh88
  • GO-2026-6367 CVE-2026-56743 GHSA-fm8w-2m5w-9j7r
  • GO-2026-6368 CVE-2026-75602 GHSA-h6cj-26g5-67fv
  • GO-2026-6369 CVE-2026-73232 GHSA-jcvh-xf52-2cwm
  • GO-2026-6370 CVE-2026-73292 GHSA-8cj9-r88m-8945
  • GO-2026-6371 CVE-2026-73293 GHSA-cxvf-gvfq-36w2
  • GO-2026-6373 CVE-2026-69086 GHSA-7hm9-v7vf-7g4w
  • GO-2026-6374 CVE-2026-69083 GHSA-fph3-ghq9-vw66
  • GO-2026-6377 CVE-2026-69084 GHSA-vh22-h7hf-www7
  • GO-2026-6379 CVE-2026-68586 GHSA-36v8-mpjm-8j5r
  • GO-2026-6381 CVE-2026-68587 GHSA-69mh-gvh4-8gp7
  • GO-2026-6382 CVE-2026-68584 GHSA-7j72-f6wg-cxw6
  • GO-2026-6384 CVE-2026-68585 GHSA-pm3w-vxp9-ccwc
  • GO-2026-6386 CVE-2026-72809 GHSA-3mp7-4rh5-jrv9
  • GO-2026-6387 CVE-2026-72805 GHSA-67x2-mq63-v9vm
  • GO-2026-6388 CVE-2026-72806 GHSA-6mcf-g667-w3qv
  • GO-2026-6392 CVE-2026-72801 GHSA-8x84-r2ff-h8pq
  • GO-2026-6395 CVE-2026-72800 GHSA-5fhr-f75j-8wr9
  • GO-2026-6398 CVE-2026-72802 GHSA-jv8v-xq2h-657v
  • GO-2026-6400 CVE-2026-72810 GHSA-mw8r-mw84-88v2
  • GO-2026-6402 CVE-2026-72811 GHSA-q2vg-7qgx-x5fc
  • GO-2026-6404 CVE-2026-72803…
Record
SUSE-SU-2026:23863-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/traefik/traefik/v2
Go
 before 2.11.56
2.11.56
github.com/traefik/traefik/v3
Go
 3.0.0 up to 3.7.12
3.7.12
github.com/traefik/traefik/v2
Go
From an advisory covering 2 CVEs
 before 2.11.56
2.11.56
github.com/traefik/traefik/v3
Go
From an advisory covering 2 CVEs
 3.0.0 up to 3.7.12
3.7.12
github.com/traefik/traefik
Go
From an advisory covering 2 CVEs
 All versions None known
govulncheck-vulndb
SUSE:Linux Enterprise Server 16.0
From an advisory covering 91 CVEs
 before 0.0.20260916T180043-160000.1.1
0.0.20260916T180043-160000.1.1
govulncheck-vulndb
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 91 CVEs
 before 0.0.20260916T180043-160000.1.1
0.0.20260916T180043-160000.1.1
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 91 CVEs
 before 0.0.20260916T180043-160000.1.1
0.0.20260916T180043-160000.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-88011 is a medium vulnerability (CVSS 5.3) in Traefik, published September 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. Fixed in github.com/traefik/traefik/v2 2.11.56.

References

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