Is CVE-2026-116620 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-116620 being exploited in the wild.

How severe is CVE-2026-116620?

High severity, with a CVSS score of 7.3, published 27 October 2026.

Is there a fix for CVE-2026-116620?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-116620 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-116620?

Check whether you run Tencent RapidJSON at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-116620: Tencent RapidJSON out-of-bounds read in string stream parsing

CVE-2026-116620 · Severity: high · CVSS 7.3 · Published 2026-10-27

RapidJSON is a widely-used open-source JSON parser library for C++. A flaw in its string parsing function allows a remote attacker to read memory beyond allocated bounds when processing a maliciously crafted JSON input, potentially exposing sensitive data from the application's memory.

Vendors: Tencent.

Quick answers

Is CVE-2026-116620 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-116620 being exploited in the wild.
How severe is CVE-2026-116620?: High severity, with a CVSS score of 7.3, published 27 October 2026.
Which products and versions are affected?: Tencent RapidJSON up to 1.1.0.
Is there a fix for CVE-2026-116620?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-116620 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-116620?: Check whether you run Tencent RapidJSON at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An out-of-bounds read vulnerability exists in the GenericStringStream<UTF8<char>>::Take() function in include/rapidjson/stream.h. The vulnerability can be triggered remotely via a crafted JSON input without requiring authentication or user interaction. An attacker can read memory outside the intended buffer, potentially leaking sensitive information.

Affected products

Tencent RapidJSON up to 1.1.0

Timeline

2026-10-27: disclosed

References

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