A vulnerability was found in DaveGamble cJSON up to 1.7.19. (CVE-2026-87933)
A use-after-free vulnerability exists in the cJSON library up to version 1.7.19 in the function cJSONUtils_MergePatch within the cJSON_Utils.c file. This flaw can be triggered remotely and may lead to impacts on confidentiality, integrity, and availability. An exploit has been publicly disclosed, but a fix is pending acceptance in a pull request.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-87933 affects DaveGamble cJSON versions up to 1.7.19. It involves a use-after-free condition in the cJSONUtils_MergePatch function of the cJSON_Utils.c source file. This memory management flaw can be exploited remotely without privileges or user interaction. The vulnerability has a CVSS 3.1 base score of 7.3, indicating moderate severity with impacts on confidentiality, integrity, and availability. Although an exploit is publicly available, the official patch has not yet been merged, and no vendor advisory or patch links are currently provided.
Potential Impact
Successful exploitation of this use-after-free vulnerability can lead to unauthorized disclosure of information, modification of data, or denial of service due to memory corruption. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk. However, there is no confirmed evidence of exploitation in the wild at this time.
Mitigation Recommendations
Currently, no official patch or fix has been released. A pull request addressing the vulnerability is awaiting acceptance. Users should monitor the official cJSON repository and related advisories for the acceptance and release of the fix. Until then, consider applying any available workarounds or avoid using the vulnerable function if feasible.
A vulnerability was found in DaveGamble cJSON up to 1.7.19. (CVE-2026-87933)
Description
A use-after-free vulnerability exists in the cJSON library up to version 1.7.19 in the function cJSONUtils_MergePatch within the cJSON_Utils.c file. This flaw can be triggered remotely and may lead to impacts on confidentiality, integrity, and availability. An exploit has been publicly disclosed, but a fix is pending acceptance in a pull request.
CVSS v3.1
Score 7.3high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-87933 affects DaveGamble cJSON versions up to 1.7.19. It involves a use-after-free condition in the cJSONUtils_MergePatch function of the cJSON_Utils.c source file. This memory management flaw can be exploited remotely without privileges or user interaction. The vulnerability has a CVSS 3.1 base score of 7.3, indicating moderate severity with impacts on confidentiality, integrity, and availability. Although an exploit is publicly available, the official patch has not yet been merged, and no vendor advisory or patch links are currently provided.
Potential Impact
Successful exploitation of this use-after-free vulnerability can lead to unauthorized disclosure of information, modification of data, or denial of service due to memory corruption. The vulnerability is remotely exploitable without authentication or user interaction, increasing its risk. However, there is no confirmed evidence of exploitation in the wild at this time.
Mitigation Recommendations
Currently, no official patch or fix has been released. A pull request addressing the vulnerability is awaiting acceptance. Users should monitor the official cJSON repository and related advisories for the acceptance and release of the fix. Until then, consider applying any available workarounds or avoid using the vulnerable function if feasible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7jcg-95pj-h5fp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87933"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6aa2af8bacd9273b4925b8c6
Added to database: 09/10/2026, 13:24:27 UTC
Last enriched: 09/10/2026, 13:40:21 UTC
Last updated: 09/10/2026, 14:53:52 UTC
Views: 4
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