How severe is CVE-2026-42517?

CVE-2026-42517 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2026-42517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42517?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42517 have an EU (EUVD) identifier?

Yes. CVE-2026-42517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26203.

When was CVE-2026-42517 published?

CVE-2026-42517 was published on 2026-04-29 and last updated on 2026-06-17.

CVE-2026-42517

CVE-2026-42517 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. 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-639.

Key facts

Severity: High (CVSS 4.0 base score 7.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26203
Weakness: CWE-639
Published: 2026-04-29
Last modified: 2026-06-17

Description

This vulnerability exists in e-Sushrut due to the use of reversible Base64 encoding for protecting sensitive data. An authenticated attacker could exploit this vulnerability by decoding and manipulating Base64-encoded parameters in the request URL to gain unauthorized access to sensitive information on the targeted system.

Frequently asked questions

What is CVE-2026-42517?: This vulnerability exists in e-Sushrut due to the use of reversible Base64 encoding for protecting sensitive data. An authenticated attacker could exploit this vulnerability by decoding and manipulating Base64-encoded parameters in the request URL to gain unauthorized access to sensitive information on the targeted system.
How severe is CVE-2026-42517?: CVE-2026-42517 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2026-42517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42517 have an EU (EUVD) identifier?: Yes. CVE-2026-42517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26203.
When was CVE-2026-42517 published?: CVE-2026-42517 was published on 2026-04-29 and last updated on 2026-06-17.

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0207

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