How severe is CVE-2020-7768?

CVE-2020-7768 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-7768 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7768?

CVE-2020-7768 primarily affects Grpc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-7768?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-7768 published?

CVE-2020-7768 was published on 2020-11-11 and last updated on 2026-06-17.

CVE-2020-7768

CVE-2020-7768 is a high-severity vulnerability in Grpc with a CVSS 3.x base score of 7.5. 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-1321.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Grpc
Published: 2020-11-11
Last modified: 2026-06-17

Description

The package grpc before 1.24.4; the package @grpc/grpc-js before 1.1.8 are vulnerable to Prototype Pollution via loadPackageDefinition.

Frequently asked questions

What is CVE-2020-7768?: The package grpc before 1.24.4; the package @grpc/grpc-js before 1.1.8 are vulnerable to Prototype Pollution via loadPackageDefinition.
How severe is CVE-2020-7768?: CVE-2020-7768 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-7768 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7768?: CVE-2020-7768 primarily affects Grpc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-7768?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-7768 published?: CVE-2020-7768 was published on 2020-11-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:grpc:grpc:*:*:*:*:*:node.js:*:*
cpe:2.3:a:grpc:grpc:*:*:*:*:*:-:*:*

More vulnerabilities in Grpc

CVE-2017-9431 — Critical (CVSS 9.8): Google gRPC before 2017-04-05 has an out-of-bounds write caused by a heap-based buffer overflow related to…
CVE-2017-8359 — Critical (CVSS 9.8): Google gRPC before 2017-03-29 has an out-of-bounds write caused by a heap-based use-after-free related to the…
CVE-2017-7861 — Critical (CVSS 9.8): Google gRPC before 2017-02-22 has an out-of-bounds write related to the gpr_free function in core/lib/support/alloc.c.
CVE-2017-7860 — Critical (CVSS 9.8): Google gRPC before 2017-02-22 has an out-of-bounds write caused by a heap-based buffer overflow related to the…
CVE-2026-33186 — Critical (CVSS 9.1): gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from…
CVE-2024-11407 — High (CVSS 7.5): There exists a denial of service through Data corruption in gRPC-C++ - gRPC-C++ servers with transmit zero copy…

All CVEs affecting Grpc →

Other CWE-1321 (Prototype Pollution) vulnerabilities

CVE-2026-25142 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict __lookupGetter__…
CVE-2024-39008 — Critical (CVSS 10.0): robinweser fast-loops v1.1.3 was discovered to contain a prototype pollution via the function objectMergeDeep. This…
CVE-2024-38999 — Critical (CVSS 10.0): jrburke requirejs v2.3.6 was discovered to contain a prototype pollution via the function s.contexts._.configure. This…
CVE-2022-29823 — Critical (CVSS 10.0): Feather-Sequalize cleanQuery method uses insecure recursive logic to filter unsupported keys from the query object.…
CVE-2022-24760 — Critical (CVSS 10.0): Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution…
CVE-2020-12079 — Critical (CVSS 10.0): Beaker before 0.8.9 allows a sandbox escape, enabling system access and code execution. This occurs because Electron…

Browse all CWE-1321 (Prototype Pollution) vulnerabilities →