How severe is CVE-2026-52882?

No CVSS score has been assigned to CVE-2026-52882 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-52882?

CVE-2026-52882 affects the following packages: mantisbt/mantisbt (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-52882?

Update mantisbt/mantisbt to 2.28.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-52882 is resolved across your whole dependency graph.

How do I detect CVE-2026-52882 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mantisbt/mantisbt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-52882 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2026-52882 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-52882 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was CVE-2026-52882 published, and has it been updated?

CVE-2026-52882 was published on July 15, 2026 and was last updated on July 15, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2026-52882 — mantisbt

Fix: mantisbt/mantisbt@17072d4

CVE-2026-52882 is a security vulnerability in mantisbt/mantisbt. A fix is available for mantisbt/mantisbt — see the affected versions and patch details below.

MantisBT: REST and SOAP API Issue Update Accepts Unreleased Product Versions From Updaters

Published

Jul 15, 2026

Updated

Jul 15, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Jul 15, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🐘mantisbt/mantisbt

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Users below report_issues_for_unreleased_versions_threshold can assign unreleased product versions.

Patches

https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f

Workarounds

None

Resources

https://mantisbt.org/bugs/view.php?id=37065

Credits

MantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`mantisbt/mantisbt`	all versions	2.28.4`composer require mantisbt/mantisbt:^2.28.4`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mantisbt/mantisbt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update mantisbt/mantisbt to 2.28.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-52882 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact Users below _report_issues_for_unreleased_versions_threshold_ can assign unreleased product versions. ### Patches - https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f ### Workarounds None ### Resources - https://mantisbt.org/bugs/view.php?id=37065 ### Credits MantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.

O3 Security · Impact-Aware SCA

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