VulnerabilityModified

CVE-2020-13957

CRITICAL 9.8EPSS 79.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 79.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

Apache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 prevents some features considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that's uploaded via API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a combination of UPLOAD/CREATE actions.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 79.34% probability · 100th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-863
Affected: apache/solr
Source: security@apache.org

EPSS trend

EPSS 79.3% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.