CVE catalog
CVE-2026-39825
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-1.19 | bookworm | 1.19.8-2 | vulnerable |
| Cpe | golang-1.19 | Not reported | Not reported | vulnerable |
| Cpe | go | Not reported | 1.25.10 | fixed |
| Cpe | go | Not reported | 1.26.3 | fixed |
| Ubuntu | golang-1.10 | 14.04 | 1.10.4-2ubuntu1~14.04.1 | vulnerable |
| Ubuntu | golang-1.10 | 16.04 | 1.10.4-2ubuntu1~16.04.1 | vulnerable |
| Ubuntu | golang-1.10 | 16.04 | 1.10.4-2ubuntu1~16.04.2 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6-0ubuntu1 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6-0ubuntu2 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6-0ubuntu3 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6-0ubuntu4 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6-0ubuntu5 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6.1-0ubuntu1 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6.2-0ubuntu5~16.04 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6.2-0ubuntu5~16.04.2 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6.2-0ubuntu5~16.04.3 | vulnerable |
| Ubuntu | golang-1.6 | 16.04 | 1.6.2-0ubuntu5~16.04.4 | vulnerable |
| Ubuntu | golang-1.13 | pro | 1.13.8-1ubuntu2 | vulnerable |
| Ubuntu | golang-1.13 | pro | 1.13.8-1ubuntu2.22.04.1 | vulnerable |
| Ubuntu | golang-1.13 | pro | 1.13.8-1ubuntu2.22.04.1+esm1 | vulnerable |
| Ubuntu | golang-1.13 | pro | 1.13.8-1ubuntu2.22.04.2 | vulnerable |
| Ubuntu | golang-1.18 | pro | 1.18.1-1ubuntu1~18.04.3 | vulnerable |
| Ubuntu | golang-1.18 | pro | 1.18.1-1ubuntu1~18.04.4 | vulnerable |
| Ubuntu | golang-1.18 | pro | 1.18.1-1ubuntu1~18.04.4+esm1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10~rc1-1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10~rc1-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10~rc1-2ubuntu1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10~rc2-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10.1-1ubuntu2 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10.4-2ubuntu1~18.04.1 | vulnerable |
| Ubuntu | golang-1.10 | 18.04 | 1.10.4-2ubuntu1~18.04.2 | vulnerable |
| Ubuntu | golang-1.16 | pro | 1.16.2-0ubuntu1~20.04 | vulnerable |
| Ubuntu | golang-1.16 | pro | 1.16.2-0ubuntu1~20.04.1 | vulnerable |
| Ubuntu | golang-1.16 | pro | 1.16.2-0ubuntu1~20.04.1+esm1 | vulnerable |
| Ubuntu | golang-1.8 | 18.04 | 1.8.3-2ubuntu1 | vulnerable |
| Ubuntu | golang-1.8 | 18.04 | 1.8.3-2ubuntu1.18.04.1 | vulnerable |
| Ubuntu | golang-1.9 | 18.04 | 1.9.1-2ubuntu1 | vulnerable |
| Ubuntu | golang-1.9 | 18.04 | 1.9.2-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.9 | 18.04 | 1.9.2-3ubuntu1 | vulnerable |
| Ubuntu | golang-1.9 | 18.04 | 1.9.3-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.9 | 18.04 | 1.9.4-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.1-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.3-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.4-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.5-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.6-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.6-2ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.7-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.8-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.8-1ubuntu1.1 | vulnerable |
| Ubuntu | golang-1.13 | 20.04 | 1.13.8-1ubuntu1.2 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14~beta1-1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14~beta1-2 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14~rc1-1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14-1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14.1-1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14.2-1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14.2-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14.3-2ubuntu2~20.04.1 | vulnerable |
| Ubuntu | golang-1.14 | 20.04 | 1.14.3-2ubuntu2~20.04.2 | vulnerable |
| Ubuntu | golang-1.18 | 20.04 | 1.18.1-1ubuntu1~20.04.1 | vulnerable |
| Ubuntu | golang-1.18 | 20.04 | 1.18.1-1ubuntu1~20.04.2 | vulnerable |
| Ubuntu | golang-1.18 | 20.04 | 1.18.1-1ubuntu1~20.04.3 | vulnerable |
| Ubuntu | golang-1.20 | 20.04 | 1.20.3-1ubuntu0.1~20.04 | vulnerable |
| Ubuntu | golang-1.20 | 20.04 | 1.20.3-1ubuntu0.1~20.04.1 | vulnerable |
| Ubuntu | golang-1.21 | 20.04 | 1.21.1-1~ubuntu20.04.1 | vulnerable |
| Ubuntu | golang-1.21 | 20.04 | 1.21.1-1~ubuntu20.04.2 | vulnerable |
| Ubuntu | golang-1.21 | 20.04 | 1.21.1-1~ubuntu20.04.3 | vulnerable |
| Ubuntu | golang-1.22 | 20.04 | 1.22.2-2~20.04.1 | vulnerable |
| Ubuntu | golang-1.22 | 20.04 | 1.22.2-2~20.04.2 | vulnerable |
| Ubuntu | golang-1.22 | 20.04 | 1.22.2-2~20.04.3 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17-1ubuntu2 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17.3-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17.3-1ubuntu2 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17.13-3ubuntu1 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17.13-3ubuntu1.2 | vulnerable |
| Ubuntu | golang-1.17 | 22.04 | 1.17.13-3ubuntu1.3 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18~beta1-0ubuntu1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18~beta2-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18~beta2-1ubuntu2 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18~rc1-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18.1-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18.1-1ubuntu1.1 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18.1-1ubuntu1.2 | vulnerable |
| Ubuntu | golang-1.18 | 22.04 | 1.18.1-1ubuntu1.3 | vulnerable |
| Ubuntu | golang-1.20 | 22.04 | 1.20.3-1ubuntu0.1~22.04 | vulnerable |
| Ubuntu | golang-1.20 | 22.04 | 1.20.3-1ubuntu0.1~22.04.1 | vulnerable |
| Ubuntu | golang-1.21 | 22.04 | 1.21.1-1~ubuntu22.04.1 | vulnerable |
| Ubuntu | golang-1.21 | 22.04 | 1.21.1-1~ubuntu22.04.2 | vulnerable |
| Ubuntu | golang-1.21 | 22.04 | 1.21.1-1~ubuntu22.04.3 | vulnerable |
| Ubuntu | golang-1.21 | 22.04 | 1.21.1-1~ubuntu22.04.4 | vulnerable |
| Ubuntu | golang-1.22 | 22.04 | 1.22.2-2~22.04 | vulnerable |
| Ubuntu | golang-1.22 | 22.04 | 1.22.2-2~22.04.1 | vulnerable |
| Ubuntu | golang-1.22 | 22.04 | 1.22.2-2~22.04.2 | vulnerable |
| Ubuntu | golang-1.22 | 22.04 | 1.22.2-2~22.04.3 | vulnerable |
| Ubuntu | golang-1.22 | 22.04 | 1.22.2-2~22.04.4 | vulnerable |
| Ubuntu | golang-1.23 | 22.04 | 1.23.1-1~22.04 | vulnerable |
| Ubuntu | golang-1.23 | 22.04 | 1.23.1-1~22.04.2 | vulnerable |
| Ubuntu | golang-1.23 | 22.04 | 1.23.1-1~22.04.3 | vulnerable |
| Ubuntu | golang-1.24 | 22.04 | 1.24.4-1ubuntu1~22.04.1 | vulnerable |
| Ubuntu | golang-1.24 | 22.04 | 1.24.4-1ubuntu1~22.04.2 | vulnerable |
| Ubuntu | golang-1.24 | 22.04 | 1.24.13-2~22.04.1 | vulnerable |
| Ubuntu | golang-1.24 | 22.04 | 1.24.13-2~22.04.2 | vulnerable |
| Ubuntu | golang-1.25 | 22.04 | 1.25.14-1~ubuntu0.22.04.1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.1-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.3-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.4-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.5-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.6-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.7-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.7-2 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.8-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.8-1build1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.9-1 | vulnerable |
| Ubuntu | golang-1.21 | 24.04 | 1.21.9-1ubuntu0.1 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22~rc1-2 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.0-1 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.0-2 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.1-1 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.1-1build1 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2ubuntu0.1 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2ubuntu0.2 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2ubuntu0.3 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2ubuntu0.4 | vulnerable |
| Ubuntu | golang-1.22 | 24.04 | 1.22.2-2ubuntu0.5 | vulnerable |
| Ubuntu | golang-1.23 | 24.04 | 1.23.1-1~24.04 | vulnerable |
| Ubuntu | golang-1.23 | 24.04 | 1.23.1-1~24.04.1 | vulnerable |
| Ubuntu | golang-1.24 | 24.04 | 1.24.4-1ubuntu1~24.04.1 | vulnerable |
| Ubuntu | golang-1.24 | 24.04 | 1.24.4-1ubuntu1~24.04.2 | vulnerable |
| Ubuntu | golang-1.24 | 24.04 | 1.24.13-2~24.04.1 | vulnerable |
| Ubuntu | golang-1.25 | 24.04 | 1.25.14-1~ubuntu0.24.04.1 | vulnerable |
| Ubuntu | golang-1.23 | 25.10 | 1.23.8-1 | vulnerable |
| Ubuntu | golang-1.23 | 25.10 | 1.23.10-1 | vulnerable |
| Ubuntu | golang-1.23 | 25.10 | 1.23.10-1ubuntu0.2 | vulnerable |
| Ubuntu | golang-1.24 | 25.10 | 1.24.2-1 | vulnerable |
| Ubuntu | golang-1.24 | 25.10 | 1.24.2-2 | vulnerable |
| Ubuntu | golang-1.24 | 25.10 | 1.24.4-1 | vulnerable |
| Ubuntu | golang-1.24 | 25.10 | 1.24.4-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.25 | 25.10 | 1.25.0-0ubuntu1 | vulnerable |
| Ubuntu | golang-1.25 | 25.10 | 1.25.7-2~25.10.1 | vulnerable |
| Ubuntu | golang-1.23 | 26.04 | 1.23.10-1 | vulnerable |
| Ubuntu | golang-1.24 | 26.04 | 1.24.4-1ubuntu1 | vulnerable |
| Ubuntu | golang-1.24 | 26.04 | 1.24.9-1 | vulnerable |
| Ubuntu | golang-1.24 | 26.04 | 1.24.13-2 | vulnerable |
| Ubuntu | golang-1.25 | 26.04 | 1.25.0-0ubuntu1 | vulnerable |
| Ubuntu | golang-1.25 | 26.04 | 1.25.7-2 | vulnerable |
| Ubuntu | golang-1.25 | 26.04 | 1.25.14-1~ubuntu0.26.04.1 | vulnerable |
| Cpe | go | Not reported | 1.26.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-1.19 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.25.10 | Not reported | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.26.3 | Not reported | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.26.3 | Not reported | NVD-CVE-2026-39825 | Not reported |
Notes
[bookworm] golang-1.19: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-1.19]Affected
Details (2)
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
- [golang-1.19-doc]Affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
- [golang-1.19-go]Affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· amd64 · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
1.19.8-2· arm64 · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
- [golang-1.19-src]Affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
1.19.8-2· all · bookwormAffected
nvd · golang-1.19 · debian · bookworm; nvd · golang-1.19 · debian · 12
[Debian 13 (Trixie)]
- [golang-1.24]Affected
Details (2)
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
- [golang-1.24-doc]Affected
Source package: [golang-1.24]
Details (2)
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
- [golang-1.24-go]Affected
Source package: [golang-1.24]
Details (2)
1.24.4-1· amd64 · trixieAffected
nvd · golang-1.24 · debian · 13
1.24.4-1· arm64 · trixieAffected
nvd · golang-1.24 · debian · 13
- [golang-1.24-src]Affected
Source package: [golang-1.24]
Details (2)
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
1.24.4-1· all · trixieAffected
nvd · golang-1.24 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21254-1.json]
- [https://go.dev/cl/770541]
- [https://go.dev/issue/78948]
- [https://groups.google.com/g/golang-announce/c/qcCIEXso47M]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-39825]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-39825]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-39825]
- [https://pkg.go.dev/vuln/GO-2026-4976]
- [https://security-tracker.debian.org/tracker/CVE-2026-39825]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39825.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]