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
2026-04-10T05:26:19.822499Z
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"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55735.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/dogukanurker/flaskblog

Affected ranges

Type
GIT
Repo
https://github.com/dogukanurker/flaskblog
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
7fea76d8c9ae624125ed86ed63e2c56dfad0d757
Database specific 
{
    "versions": [
        {
            "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"