Vulnerability in erlang
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as UBUNTU-CVE-2025-26618 has been found in erlang.
Risk of unauthorized operations or information disclosure.
What to do: upgrade erlang to 1:16.b.3-dfsg-1ubuntu2.2+esm3 or later.
If unsure, ask your IT team or search "erlang UBUNTU-CVE-2025-26618" on the vendor's site.
UBUNTU-CVE-2025-26618 (erlang)
Patched: 1:16.b.3-dfsg-1ubuntu2.2+esm3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in erlang.
Check the vendor advisory for the affected versions of erlang.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1:16.b.3-dfsg-1ubuntu2.2+esm3.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'erlang' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'erlang' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
erlangを grep し、稼働しているサービス・バージョンを把握する。 -
2
Apply patchpatch
Upgrade erlang to 1:16.b.3-dfsg-1ubuntu2.2+esm3ステージング環境で 1:16.b.3-dfsg-1ubuntu2.2+esm3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Ubuntu:Pro:14.04:LTS | erlang |
< 1:16.b.3-dfsg-1ubuntu2.2+esm3 |
1:16.b.3-dfsg-1ubuntu2.2+esm3 |
| Ubuntu:Pro:16.04:LTS | erlang |
< 1:18.3-dfsg-1ubuntu3.1+esm4 |
1:18.3-dfsg-1ubuntu3.1+esm4 |
| Ubuntu:Pro:18.04:LTS | erlang |
< 1:20.2.2+dfsg-1ubuntu2+esm4 |
1:20.2.2+dfsg-1ubuntu2+esm4 |
| Ubuntu:20.04:LTS | erlang |
< 1:22.2.7+dfsg-1ubuntu0.3 |
1:22.2.7+dfsg-1ubuntu0.3 |
| Ubuntu:22.04:LTS | erlang |
< 1:24.2.1+dfsg-1ubuntu0.2 |
1:24.2.1+dfsg-1ubuntu0.2 |
| Ubuntu:24.04:LTS | erlang |
< 1:25.3.2.8+dfsg-1ubuntu4.1 |
1:25.3.2.8+dfsg-1ubuntu4.1 |
Original description The description as published by the source.
Erlang is a programming language and runtime system for building massively scalable soft real-time systems with requirements on high availability. OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang. Packet size is not verified properly for SFTP packets. As a result when multiple SSH packets (conforming to max SSH packet size) are received by ssh, they might be combined into an SFTP packet which will exceed the max allowed packet size and potentially cause large amount of memory to be allocated. Note that situation described above can only happen for successfully authenticated users after completing the SSH handshake. This issue has been patched in OTP versions 27.2.4, 26.2.5.9, and 25.3.2.18. There are no known workarounds for this vulnerability.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- advisory ubuntu.com
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report github.com
- report erlang.org