How severe is CVE-2026-8754?

No CVSS score has been assigned to CVE-2026-8754 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-8754?

CVE-2026-8754 affects the following packages: astrbot (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2026-8754?

Update astrbot to 4.23.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-8754 is resolved across your whole dependency graph.

How do I detect CVE-2026-8754 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for astrbot. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate CVE-2026-8754 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.

How does O3 Security protect against CVE-2026-8754?

O3 pinpoints whether CVE-2026-8754 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is CVE-2026-8754 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-8754 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.

What is the EPSS score for CVE-2026-8754?

CVE-2026-8754 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 29th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-8754?

CVE-2026-8754 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-8754 published, and has it been updated?

CVE-2026-8754 was published on May 17, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2026-8754: astrbot Path Traversal

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-8754.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs29th percentile — riskier than 29% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

🐍astrbot

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

Description

A vulnerability was detected in AstrBotDevs AstrBot up to 4.23.5. Impacted is the function post_file of the file astrbot/dashboard/routes/chat.py of the component File Upload Handler. The manipulation of the argument filename results in path traversal. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 4.23.6 is recommended to address this issue. The patch is identified as aaec41e5054569ceaa1113593a34da7568e2d211. You should upgrade the affected component.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`astrbot`	all versions	4.23.6

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for astrbot. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update astrbot to 4.23.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-8754 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.
How O3 protects you
O3 pinpoints whether CVE-2026-8754 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2026-8754. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

A vulnerability was detected in AstrBotDevs AstrBot up to 4.23.5. Impacted is the function post_file of the file astrbot/dashboard/routes/chat.py of the component File Upload Handler. The manipulation of the argument filename results in path traversal. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 4.23.6 is recommended to address this issue. The patch is identified as aaec41e5054569ceaa1113593a34da7568e2d211. You should upgrade the affected component.

O3 Security · Impact-Aware SCA

Is CVE-2026-8754 in your dependencies?

O3 detects CVE-2026-8754 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

CVE-2026-8754