CVE-2020-26157
CVE-2020-26157 is a critical-severity vulnerability in Leanote with a CVSS 3.x base score of 9.6. 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-79.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- CVSS v2: 6.8
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Leanote
- Published:
- Last modified:
Description
Leanote Desktop through 2.6.2 allows XSS because a note's title is mishandled during syncing. This leads to remote code execution because of Node integration.
Frequently asked questions
- What is CVE-2020-26157?
- Leanote Desktop through 2.6.2 allows XSS because a note's title is mishandled during syncing. This leads to remote code execution because of Node integration.
- How severe is CVE-2020-26157?
- CVE-2020-26157 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-26157 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-26157?
- CVE-2020-26157 affects Leanote. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-26157?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-26157 published?
- CVE-2020-26157 was published on 2020-09-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:leanote:leanote:*:*:*:*:*:*:*:*
More vulnerabilities in Leanote
- CVE-2020-26158 — Critical (CVSS 9.6): Leanote Desktop through 2.6.2 allows XSS because a note's title is mishandled when the batch feature is triggered. This…
- CVE-2021-43721 — Medium (CVSS 6.1): Leanote 2.7.0 is vulnerable to Cross Site Scripting (XSS) in the markdown type note. This leads to remote code…
- CVE-2019-1010003 — Medium (CVSS 6.1): Leanote prior to version 2.6 is affected by: Cross Site Scripting (XSS).
- CVE-2018-18553 — Medium (CVSS 6.1): Leanote 2.6.1 has XSS via the Blog Basic Setting title field, which is mishandled during rendering of the "likes" page.
- CVE-2017-1000459 — Medium (CVSS 6.1): Leanote version <= 2.5 is vulnerable to XSS due to not sanitized input in markdown notes
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