CVE-2021-34817

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 69.4% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-07-19 13:38Z5 YR AGO

Last updated

2024-08-04 00:26Z2 YR AGO

Reserved

2021-06-17

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

3cddb97a2ff42b5efa1f95ab0f5127b67eaf77fb71bf0ece36c3507e814a46a8

• etherpad.orghttps://etherpad.org/#downloadx_refsource_MISC
• github.comhttps://github.com/ether/etherpad-lite/releases/tag/1.8.14x_refsource_MISC
• blog.sonarsource.comhttps://blog.sonarsource.com/etherpad-code-execution-vulnerabilitiesx_refsource_MISC
• github.comhttps://github.com/ether/etherpad-lite/commit/a7968115581e20ef47a533e030f59f830486bdfax_refsource_MISC