CVE-2026-5315: A vulnerability was determined in Nothings stb up to 1.26

Q: How do I fix CVE-2026-5315?

stb truetype.h: upgrade to newer than 1.26. Exact commands for each OS are on this page.

Q: Is CVE-2026-5315 being exploited?

CVE-2026-5315 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5315 affect?

CVE-2026-5315 affects stb truetype.h. Severity is medium (CVSS 4.3). A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds read. The at

Q: How urgent is CVE-2026-5315?

Priority 31/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-5315 is a medium-severity flaw (CVSS 4.3) affecting stb truetype.h. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds read. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-119, CWE-125
Published	2026-04-02
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: nothings

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 00:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

nothings stb truetype.h UPGRADE

Affected: <= 1.26

Fixed in: newer than 1.26

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy stb-truetype.h || rpm -q stb-truetype.h || stb-truetype.h --version

2. UPGRADE to newer than 1.26 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade stb-truetype.h

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stb-truetype.h

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5315?

stb truetype.h: upgrade to newer than 1.26. Exact commands for each OS are on this page.

Is CVE-2026-5315 being exploited?

CVE-2026-5315 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5315 affect?

CVE-2026-5315 affects stb truetype.h. Severity is medium (CVSS 4.3). A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds read. The at

How urgent is CVE-2026-5315?

Priority 31/100. Public exploit reference

Related CVEs

CVE-2026-5314 MEDIUM 4.3 UPGRADE A vulnerability was found in Nothings stb up to 1.26

References

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