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VulnerabilityPublished

CVE-2025-66485: IBM Aspera Shares · Improper Neutralization of HTTP Headers for Scripting Syntax

Affects IBM Aspera SharesSource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMAspera SharesAffected
  • >=1.9.9 <=1.11.0
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:ibm:aspera_shares:1.9.9:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:aspera_shares:1.11.0:*:*:*:*:*:*:*

AI-suggested

Until a fix is available, consider implementing input validation or filtering on HOST headers at the network or application level if feasible.

Description

IBM Aspera Shares versions 1.9.9 through 1.11.0 contain a vulnerability due to improper validation of HOST headers, leading to HTTP header injection. This flaw can enable attackers to perform attacks such as cross-site scripting, cache poisoning, or session hijacking. The vulnerability has a medium severity with a CVSS score of 5.4. No official patch or vendor advisory is provided in the input data, and no known exploits are reported in the wild.

References

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