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VulnerabilityPublished Updated

CVE-2025-66486: IBM Aspera Shares · Basic XSS

Affects IBM Aspera SharesSource CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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 an official fix is released, organizations should consider limiting access to affected versions and exercising caution with user-generated content in IBM Aspera Shares. Monitor IBM's security advisories for updates on patches or official mitigations.

Description

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.

References

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