CVE-2025-9287 Missing type checks leading to hash rewind and passing on crafted data

Critical 9.1 Published Updated

Attackers can manipulate input data in the cipher-base library due to missing type checks, potentially altering cryptographic operations.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-9287?

CVE-2025-9287 is a critical vulnerability in browserify:cipher-base, published on 20 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Improper Input Validation vulnerability in cipher-base allows Input Data Manipulation.This issue affects cipher-base: through 1.0.4.

Weakness: CWE-20

Which versions are affected by CVE-2025-9287?

2 open source packages ship an affected version, including cipher-base. It affects 1 product.

PackageAffectedFixed in
cipher-base npmAll versions1.0.5
cipher-base npmAll versions1.0.5
Linux distribution packages (1)
python-bqplot openSUSE:TumbleweedAll versions0.12.45-12.1

Products include Browserify Cipher-Base.

How do I fix CVE-2025-9287?

Upgrade cipher-base to 1.0.5 or later.

Is CVE-2025-9287 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9287 exists.

Sources

Also known as CLSA-2026-1779670116, DEBIAN-CVE-2025-9287, DLA-4291-1, DSA-5986-1, GHSA-cpq7-6gpm-g9rc, ROOT-APP-NPM-CVE-2025-9287 and 3 more.

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