CVE-2025-66484: IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to stored cross-site scripting

Routine

MEDIUM 5.5UPGRADE

CVE-2025-66484 is a medium-severity flaw (CVSS 5.5) affecting aspera shares. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-01
Last modified	2026-10-07

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 23:17 UTCPublished CVE record published
2026-10-07 09:10 UTCUpdated Record last modified

ibm aspera shares UPGRADE

Affected: >= 1.9.9 and < 1.11.1

Fixed in: 1.11.1

Safe to downgrade to: a release before 1.9.9

1. Check installed version

apt-cache policy aspera-shares || rpm -q aspera-shares || aspera-shares --version

2. UPGRADE to 1.11.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade aspera-shares

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade aspera-shares

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.9.9 (Debian / Ubuntu)

apt-cache madison aspera-shares sudo apt install aspera-shares=<VERSION_BEFORE_1.9.9> sudo apt-mark hold aspera-shares

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list aspera-shares sudo dnf downgrade aspera-shares-<VERSION_BEFORE_1.9.9> sudo dnf versionlock add aspera-shares

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-66484?

aspera shares: upgrade to 1.11.1. Exact commands for each OS are on this page.

Is CVE-2025-66484 being exploited?

CVE-2025-66484 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-66484 affect?

CVE-2025-66484 affects aspera shares. Severity is medium (CVSS 5.5). IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credential

How urgent is CVE-2025-66484?

Priority 21/100. No elevated risk signals yet.

Related CVEs

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CVE-2025-66483 MEDIUM 6.3 UPGRADE IBM Aspera Shares 1.9.9 through 1.11.0 does not invalidate session after a password reset which could allow an
CVE-2025-66485 MEDIUM 5.4 UPGRADE IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTTP header injection, caused by improper validation o
CVE-2025-66486 MEDIUM 4.8 UPGRADE IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTML injection
CVE-2025-66487 LOW 2.7 UPGRADE IBM Aspera Shares 1.9.9 through 1.11.0 does not properly rate limit the frequency that an authenticated user c

References

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