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High, CVSS 7.8amended

PyLoad vulnerable to SQL Injection via API /json/add_package in add_links parameter

CVE-2025-55156GHSA-pwh4-6r3m-j2rf

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (pyload-ng 0.5.0b3.dev91), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • PyPI pyload-ng

    Affected
    < 0.5.0b3.dev91
    Fixed in
    0.5.0b3.dev91

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
7.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P · score source
EPSS
  • CVE-2025-55156: 0.36% estimated exploitation activity in the next 30 days; percentile 30.16 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary The parameter addlinks in the API /json/addpackage is vulnerable to SQL Injection. SQL injection vulnerabilities can lead to sensitive data leakage. Details - Affected file：https://github.com/pyload/pyload/blob/develop/src/pyload/core/database/filedatabase.py#L271 - Affected code: statuses is constructed from data, and data is the value of the addlinks parameter entered by the user through /json/addpackge. Because {statuses} is directly spliced into the SQL statement, it leads to the SQL injection vulnerability. - Vulnerability Chain PoC <img width="1599" height="827" alt="image" src="https://github.com/user-attachments/assets/9bdcef37-59b8-4e60-a2b5-beb8a88c3202" / Remediation Impact Attackers can modify or delete data in the database, causing data errors or loss.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-pwh4-6r3m-j2rf

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-pwh4-6r3m-j2rf

Agent brief

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# Patch Next advisory brief: CVE-2025-55156

Advisory: PyLoad vulnerable to SQL Injection via API /json/add_package in add_links parameter
IDs: CVE-2025-55156, GHSA-pwh4-6r3m-j2rf
Record: https://patchnext.com/advisories/cve-2025-55156 (revision 3, source checked 26 Oct 2026, 13:32 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: pyload-ng 0.5.0b3.dev91. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI pyload-ng: affected < 0.5.0b3.dev91; fixed in 0.5.0b3.dev91

## Suggested inspection (read-only)
- `python -m pip show pyload-ng`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on pyload-ng.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-pwh4-6r3m-j2rf (OSV record GHSA-pwh4-6r3m-j2rf lists affected ranges: PyPI pyload-ng >=0 <0.5.0b3.dev91 (fixed))
- Verified: https://github.com/advisories/GHSA-pwh4-6r3m-j2rf (GitHub-reviewed advisory GHSA-pwh4-6r3m-j2rf lists affected ranges: PyPI pyload-ng >=0 <0.5.0b3.dev91)

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