HCL iNotes is susceptible to a sensitive cookie exposure vulnerability.

published 2020-11-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25373

cvss: 5.9; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

HCL iNotes is susceptible to a sensitive cookie exposure vulnerability. This can allow an unauthenticated remote attacker to capture the cookie by intercepting its transmission within an http session. Fixes are available in HCL Domino and iNotes versions 10.0.1 FP6 and 11.0.1 FP2 and later.

Patch / fix

fixed in 1

hcltech hcl_inotes 10.0.1, 11.0.1

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

n/a HCL iNotes

Classification

Weakness

CWE-311 Missing Encryption of Sensitive Data

References

support.hcltechsw.com /csm?id=kb_article&sysparm_article=KB0085411
vendor-advisory

Sources

CVE List CVE-2020-4126
NVD CVE-2020-4126

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary