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VulnerabilityPublished Updated

CVE-2026-32685: Gleam · Path Traversal

Affects GleamSource CVE Database V5

0
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Public exploit available · CVSS 4.6 Medium : upgrade to 1.17.0 as a priority.

Data as of 10 Nov 2026, 19:35 UTC

CVSS 4.0 base score
4.6Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (EEF)CVSS 4.04.6
CISA SSVC
Exploitation
Proof of concept is public or traded
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-06-02.

Patch
Available – fixed in 1.17.0, v1.17.0-scratch, v1.17.0-node-slim +9
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 2 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CISA SSVC: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Erlang Ecosystem Foundation

    , 81 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. CISA SSVC assessment

    proof of concept public

    , 1 hour after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
GleamgleamAffected
  • >=1.16.0 <1.17.0
Fixed in
  • 1.17.0
Gleamgleam-lang/gleamAffected
  • >=1.16.0-elixir <1.17.0-elixir
  • >=1.16.0-erlang <1.17.0-erlang
  • >=1.16.0-node <1.17.0-node
  • >=1.16.0-node-slim <1.17.0-node-slim
  • >=1.16.0-elixir-slim <1.17.0-elixir-slim
  • >=1.16.0-erlang-slim <1.17.0-erlang-slim
  • >=1.16.0-erlang-alpine <1.17.0-erlang-alpine
  • >=1.16.0-elixir-alpine <1.17.0-elixir-alpine
  • >=1.16.0-node-alpine <1.17.0-node-alpine
  • >=1.16.0-scratch <1.17.0-scratch
Fixed in
  • v1.17.0-scratch
  • v1.17.0-node-slim
  • v1.17.0-node-alpine
  • v1.17.0-node
  • v1.17.0-erlang-slim
  • v1.17.0-erlang-alpine
  • v1.17.0-erlang
  • v1.17.0-elixir-slim
  • v1.17.0-elixir-alpine
  • v1.17.0-elixir
Gleamgleam-lang/gleamAffected
  • ≥ 61ed8deb6572b5591ad17d6302c1a38607522f16, < 81570611906b6b0039c948037094d09a68700f3a
Fixed in
  • 81570611906b6b0039c948037094d09a68700f3a

CPE configurations (1)

  • cpe:2.3:a:gleam-lang:gleam:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version of Gleam is available starting from version 1.17.0 and its platform-specific variants. Users should upgrade to Gleam 1.17.0 or later to remediate this vulnerability. No other mitigation actions are indicated by the vendor advisory.

Description

CVE-2026-32685 is a path traversal vulnerability in Gleam versions from 1.16.0 up to but not including 1.17.0. It allows arbitrary file read and write outside the intended documentation output directory via insufficient validation of paths in the documentation.pages entries in gleam.toml. An attacker who can trick a user into building documentation on a malicious project or with malicious gleam.toml content can cause local files to be read and included in generated documentation or cause files to be written outside the expected output directory.

References

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