Is CVE-2026-4820 in the CISA KEV catalog?

No. CVE-2026-4820 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-4820?

CVE-2026-4820 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-4820?

CVE-2026-4820 has an EPSS score of 0.12% (2th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4820?

Upgrade maximo application suite to 9.1.8 or later.

CVE & CISA-KEV Catalog

CVE-2026-4820

MEDIUM

4.3

CVSS v3

NVD

Description

IBM Maximo Application Suite 9.1, 9.0, 8.11, and 8.10 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic.

CWE-614 CWE-319

How to fix

Remediation Available

maximo application suiteNVD

Affected:>= 9.1, < 9.1.8Fixed in:9.1.8CVE-2026-4820derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Exploit Intelligence

0.12%probability of exploitation in 30 days

2ndpercentile

Low risk: more likely to be exploited than 2% of all known CVEs.

References

Vendor Advisory1

ibm.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-07.