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CVE-2022-1276

30
FAUCET Score

CVE-2022-1276 is a critical out-of-bounds read vulnerability in the mrb_get_args function of mruby versions prior to 3.2. This flaw, with a CVSS score of 9.8, allows for potential arbitrary code execution and can be exploited remotely without user interaction. While no public exploits or active exploitation have been confirmed, the vulnerability has garnered significant community discussion, indicating awareness and potential future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2CPE matchmatch criteria
cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.4HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 58th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / mruby/mruby/commit/c8c083cb750606b2da81582cd8e43b442bb143e6
PatchThird Party Advisory
huntr.dev / bounties/6ea041d1-e2aa-472c-bf3e-da5fa8726c25
ExploitThird Party Advisory