CVE-2025-48039
Unverified Paths can Cause Excessive Use of System Resources
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 26.2.5.15, OTP 27.3.4.3, and OTP 28.0.3, corresponding to ssh from 3.0.1 before 5.1.4.12, 5.2.11.3, and 5.3.3.
Fixes and workarounds
Workaround
* Disable sftp * limiting number of max_sessions allowed for sshd, so exploiting becomes more complicated
Source: CNA: EEFFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: EEFFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: EEFFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: EEFAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| OTP Erlang otp
software-id |
≥ 17.0; < * (affected, otp); unaffected at 26.2.5.15; unaffected at 27.3.4.3; unaffected at 28.0.3
Other versions: unaffected |
CNA: EEF |
| OTP Erlang ssh
otp |
≥ 3.0.1; < * (affected, otp); unaffected at 5.1.4.12; unaffected at 5.2.11.3; unaffected at 5.3.3
Other versions: unaffected |
CNA: EEF |
| OTP Erlang erlang/otp
github |
≥ 07b8f441ca711f9812fad9e9115bab3c3aa92f79; < * (affected, git); unaffected at 043ee3c943e2977c1acdd740ad13992fd60b6bf0; unaffected at c242e6458967e9514bea351814151695807a54ac
Other versions: unaffected |
CNA: EEF |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 5.3 medium |
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 | CNA: EEF |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/erlang/otp/security/advisories/GHSA-rr5p-6856-j7h8CNA: EEF · vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2025-48039.htmlCNA: EEF · related
- https://osv.dev/vulnerability/EEF-CVE-2025-48039CNA: EEF · related
- https://www.erlang.org/doc/system/versions.html#order-of-versionsCNA: EEF · x_version-scheme
- https://github.com/erlang/otp/pull/10155CNA: EEF · patch
- https://github.com/erlang/otp/commit/07b8f441ca711f9812fad9e9115bab3c3aa92f79CNA: EEF · related
- https://github.com/erlang/otp/commit/043ee3c943e2977c1acdd740ad13992fd60b6bf0CNA: EEF · patch
- https://github.com/erlang/otp/commit/c242e6458967e9514bea351814151695807a54acCNA: EEF · patch
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