How severe is CVE-2026-48846?

CVE-2026-48846 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-48846 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48846?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-48846 have an EU (EUVD) identifier?

Yes. CVE-2026-48846 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31725.

When was CVE-2026-48846 published?

CVE-2026-48846 was published on 2026-05-25 and last updated on 2026-06-17.

CVE-2026-48846

CVE-2026-48846 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-669.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31725
Weakness: CWE-669
Published: 2026-05-25
Last modified: 2026-06-17

Description

In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, the remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message, which may lead to information disclosure or access-control bypass.

Frequently asked questions

What is CVE-2026-48846?: In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, the remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message, which may lead to information disclosure or access-control bypass.
How severe is CVE-2026-48846?: CVE-2026-48846 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-48846 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-48846?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48846 have an EU (EUVD) identifier?: Yes. CVE-2026-48846 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31725.
When was CVE-2026-48846 published?: CVE-2026-48846 was published on 2026-05-25 and last updated on 2026-06-17.

References

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