CVE-2025-55735

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Source

https://cve.org/CVERecord?id=CVE-2025-55735

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-55735.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-55735

Aliases

GHSA-gj9v-qhc3-gcfx

Published

2025-08-19T18:56:42.600Z

Modified

2026-07-15T01:49:16.324071644Z

Severity

5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

flaskBlog Stored XSS Vulnerability

Details

flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, when creating a post, there's no validation of the content of the post stored in the variable "postContent". The vulnerability arises when displaying the content of the post using the | safe filter, that tells the engine to not escape the rendered content. This can lead to a stored XSS inside the content of the post. The code that causes the problem is in template/routes.html.

Database specific

{
    "cwe_ids": [
        "CWE-79",
        "CWE-807"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55735.json"
}

References

Affected packages

Git / github.com/dogukanurker/flaskblog

Affected ranges

Type

GIT

Repo

https://github.com/dogukanurker/flaskblog

Events

Introduced

Last affected

7fea76d8c9ae624125ed86ed63e2c56dfad0d757

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.8.0"
        }
    ]
}

Affected versions

1.*

1.0.0

1.0.1

1.0.2

1.0.3

1.0.4

1.0.5

1.0.6

1.0.7

1.0.8

1.0.9

1.1.0

2.*

2.0.0

2.0.1

2.0.10

2.0.11

2.0.12

2.0.2

2.0.3

2.0.4

2.0.5

2.0.6

2.0.7

2.0.8

2.0.9

2.1.0

2.1.1

2.1.2

2.1.3

2.1.4

2.2.0

2.2.1

2.3.0

2.4.0

2.5.0

2.6.0

2.7.0

2.8.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-55735.json"