Dashboard / CVE-2026-123613

CVE-2026-123613

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 74/100
Published: 2026-11-08 Modified: 2026-11-12 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: Low
VI: None
VA: None

Description

Rustls from 0.23.13 before 0.23.45 accepts TLS 1.3 handshake messages at the wrong encryption level when they follow a key-changing message in the same record, because Deframer::aligned does not enforce RFC 8446 record-boundary alignment. A peer or on-path attacker can pack a plaintext EncryptedExtensions with the ServerHello, which rustls accepts unencrypted.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
rustls rustls 0.23.13 < 0.23.45
rustls rustls 0.23.13 < 0.23.45

References & Advisories (3)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.16%
Raw Score 0.001560
Percentile 4.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00156
2026-11-12
0.00156
2026-11-10
0.00156
2026-11-09
0.00156
2026-11-08
0.00156

Intelligence Sources

mitre ref →
nvd ref →

External Links