CVE-2026-55834

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Source
https://cve.org/CVERecord?id=CVE-2026-55834
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55834.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55834
Aliases
Published
2026-08-28T16:27:58.324Z
Modified
2026-08-30T03:46:58.641151593Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Pocket ID: Open Redirect on the OIDC /authorize page via unvalidated redirect_uri with prompt=none
Details

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to services. From 2.6.0 until 2.9.0, frontend/src/routes/authorize/+page.ts reads the redirecturi query parameter and frontend/src/routes/authorize/+page.svelte uses the raw callbackURL in redirectWithError when prompt=none cannot complete silent authorization. The client-side path only blocks javascript and data schemes and does not invoke the backend callback allow-list validation, so an unauthenticated attacker who knows a valid clientid can redirect a victim browser to an arbitrary HTTP or HTTPS origin for phishing or OIDC error and state smuggling. This issue is fixed in version 2.9.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55834.json",
    "cwe_ids": [
        "CWE-601"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/pocket-id/pocket-id

Affected ranges

Type
GIT
Repo
https://github.com/pocket-id/pocket-id
Events
Introduced
0d40bf29ab4f453602af42ce08d3171c7019f74a
Fixed
8a7577497131229badb35cb4b3a4227b1300afff
Fixed
49cb131b7de6348adf9c0d742e1c0cee58dcb37d
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "2.6.0"
        },
        {
            "fixed": "2.9.0"
        }
    ]
}

Affected versions

v2.*
v2.6.0
v2.6.1
v2.6.2
v2.7.0
v2.8.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55834.json"