CVE-2026-123199

MEDIUM 5.5

eBook-speaker through 6.2.0 Stack-based Buffer Overflow via element name attribute

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

eBook-speaker 6.1.0 through 6.2.0 contains a stack buffer overflow vulnerability in get_attributes() in src/common.c caused by an unbounded strcpy of an element's name attribute. Attackers can craft an EPUB or DAISY book with a name attribute of 511 or more characters to corrupt the stack and crash the reader when opened.

CWE	CWE-120
Vendor	book-readers
Product	ebook-speaker
Published	Nov 5, 2026

Stay Ahead of the Next One

Get instant alerts for book-readers ebook-speaker

Be the first to know when new medium vulnerabilities affecting book-readers ebook-speaker are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

book-readers / eBook-speaker

6.1.0 ≤ 6.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/book-readers/ebook-speaker/commit/23b5c86585d7e3c27c932b112f4e36858e70f210 github.com: https://github.com/book-readers/ebook-speaker/blob/4a8f457a0fd65a96463c0fa9bd0612242c081dc8/src/common.c#L631-L632 vulncheck.com: https://www.vulncheck.com/advisories/ebook-speaker-through-6.2.0-stack-based-buffer-overflow-via-element-name-attribute

Credits

Deus Rex Samuel Thibault