VulnerabilityModified
CVE-2020-7765
This vulnerability relates to the deepExtend function within the DeepCopy.ts file.
MEDIUM 5.3EPSS 0.57%
Does this matter?
Lower severity and a low EPSS score (0.57%). Track it; it rarely justifies an emergency change on its own.
Description
This affects the package @firebase/util before 0.3.4. This vulnerability relates to the deepExtend function within the DeepCopy.ts file. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.57% probability · 47th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- google/firebase\/util
- Source
- report@snyk.io
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/firebase/firebase-js-sdk/commit/9cf727fcc3d049551b16ae0698ac33dc2fe45adaPatch, Third Party Advisory
- https://github.com/firebase/firebase-js-sdk/pull/4001Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-FIREBASEUTIL-1038324Exploit, Third Party Advisory
- https://github.com/firebase/firebase-js-sdk/commit/9cf727fcc3d049551b16ae0698ac33dc2fe45adaPatch, Third Party Advisory
- https://github.com/firebase/firebase-js-sdk/pull/4001Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-FIREBASEUTIL-1038324Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.