CVE-2026-48847 Other in Webmail
Low 3.7
Published
Updated
Check this codebase for CVE-2026-48847 and fix it if it is affected.
What it is: CVE-2026-48847 is a low-severity vulnerability in Roundcube Webmail, published on 25 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-48847 in the wild and no public exploit code.
Affected product: Roundcube Webmail. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-48847/ (Markdown: https://insights.sbomify.com/CVE-2026-48847/index.md)
Attackers can delete arbitrary files pre-authentication by poisoning Redis or Memcache sessions, requiring specific cache configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48847?
CVE-2026-48847 is a low-severity vulnerability in Roundcube Webmail, published on 25 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Roundcube Webmail 1.6.x before 1.6.16, and 1.7.x before 1.7.1 allows pre-authentication arbitrary file deletion via redis/memcache session poisoning bypass.
Weakness: CWE-669
Which versions are affected by CVE-2026-48847?
How do I fix CVE-2026-48847?
Upgrade to a fixed version.
Is CVE-2026-48847 being exploited?
There is no known exploitation of CVE-2026-48847 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-48847, GHSA-9vwp-h229-h4cm, UBUNTU-CVE-2026-48847.