CVE-2026-25500

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Source
https://cve.org/CVERecord?id=CVE-2026-25500
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25500.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-25500
Aliases
Downstream
CGA (128)
CLEANSTART (8)
DEBIAN (1)
MGASA (1)
MINI (22)
openSUSE (1)
UBUNTU (1)
Related
Published
2026-02-18T18:59:31Z
Modified
2026-10-21T02:30:50Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Rack's Stored XSS in Rack::Directory via javascript: filenames rendered into anchor href
Details

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, Rack::Directory generates an HTML directory index where each file entry is rendered as a clickable link. If a file exists on disk whose basename starts with the javascript: scheme (e.g. javascript:alert(1)), the generated index contains an anchor whose href is exactly javascript:alert(1). Clicking the entry executes JavaScript in the browser (demonstrated with alert(1)). Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25500.json"
}
References

Affected packages

Git / github.com/rack/rack

Affected ranges

Type
GIT
Repo
https://github.com/rack/rack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0cc2e00b22dffc33955ef912569f01e515a406e1
Introduced
52901caf09ebcda879512a8605059963a49df55d
Fixed
65044344e4780d80b409f9ba27df41b6307b5ff5
Introduced
b68251c03788ff39d4a4b25424df7360426e4afd
Fixed
bb5f3555bd12b9065112353e829298b3b5623ceb
Fixed
f2f225f297b99fbee3d9f51255d41f601fc40aff
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.2.22"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*",
            "range":  [
                {
                    "introduced":  "3.0.0"
                },
                {
                    "fixed":  "3.1.20"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*",
            "range":  [
                {
                    "introduced":  "3.2.0"
                },
                {
                    "fixed":  "3.2.5"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "f2f225f297b99fbee3d9f51255d41f601fc40aff"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

0.*
0.1
0.2
0.3
1.*
1.0
1.3.0
1.3.0.beta
1.3.0.beta2
1.4.0
1.4.1
1.5.0
1.5.1
1.6.0.beta
2.*
2.0.0
2.0.0.alpha
2.0.0.rc1
2.0.1
2.1.0
2.2.0
2.2.3
2.2.4
3.*
3.0.0
v2.*
v2.2.1
v2.2.10
v2.2.11
v2.2.12
v2.2.13
v2.2.14
v2.2.15
v2.2.16
v2.2.17
v2.2.18
v2.2.19
v2.2.2
v2.2.20
v2.2.21
v2.2.5
v2.2.6
v2.2.6.1
v2.2.6.2
v2.2.7
v2.2.8
v2.2.9
v3.*
v3.1.0
v3.1.10
v3.1.11
v3.1.12
v3.1.13
v3.1.14
v3.1.15
v3.1.16
v3.1.17
v3.1.18
v3.1.19
v3.1.2
v3.1.3
v3.1.4
v3.1.5
v3.1.6
v3.1.7
v3.1.8
v3.1.9
v3.2.0
v3.2.1
v3.2.2
v3.2.3
v3.2.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25500.json"