CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-40194

phpseclib is a PHP secure communications library. Prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::get_binary_packet() uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp(), which short-circuits on the first differing byte. This is a real variable-time comparison (CWE-208), proven by scaling benchmarks. This vulnerability is fixed in 3.0.51, 2.0.53, and 1.0.28.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 2.0%

CVSS Severity

CVSS v3 Score 3.7

References

Products affected by CVE-2026-40194

Phpseclib » Phpseclib » Version: 0.1.0

cpe:2.3:a:phpseclib:phpseclib:0.1.0
Phpseclib » Phpseclib » Version: 0.1.1

cpe:2.3:a:phpseclib:phpseclib:0.1.1
Phpseclib » Phpseclib » Version: 0.1.2

cpe:2.3:a:phpseclib:phpseclib:0.1.2
Phpseclib » Phpseclib » Version: 0.1.5

cpe:2.3:a:phpseclib:phpseclib:0.1.5
Phpseclib » Phpseclib » Version: 0.2.0

cpe:2.3:a:phpseclib:phpseclib:0.2.0
Phpseclib » Phpseclib » Version: 0.2.1

cpe:2.3:a:phpseclib:phpseclib:0.2.1
Phpseclib » Phpseclib » Version: 0.2.2

cpe:2.3:a:phpseclib:phpseclib:0.2.2
Phpseclib » Phpseclib » Version: 0.3.0

cpe:2.3:a:phpseclib:phpseclib:0.3.0
Phpseclib » Phpseclib » Version: 0.3.1

cpe:2.3:a:phpseclib:phpseclib:0.3.1
Phpseclib » Phpseclib » Version: 0.3.10

cpe:2.3:a:phpseclib:phpseclib:0.3.10
Phpseclib » Phpseclib » Version: 0.3.5

cpe:2.3:a:phpseclib:phpseclib:0.3.5
Phpseclib » Phpseclib » Version: 0.3.6

cpe:2.3:a:phpseclib:phpseclib:0.3.6
Phpseclib » Phpseclib » Version: 0.3.7

cpe:2.3:a:phpseclib:phpseclib:0.3.7
Phpseclib » Phpseclib » Version: 0.3.8

cpe:2.3:a:phpseclib:phpseclib:0.3.8
Phpseclib » Phpseclib » Version: 0.3.9

cpe:2.3:a:phpseclib:phpseclib:0.3.9
Phpseclib » Phpseclib » Version: 1.0.0

cpe:2.3:a:phpseclib:phpseclib:1.0.0
Phpseclib » Phpseclib » Version: 1.0.1

cpe:2.3:a:phpseclib:phpseclib:1.0.1
Phpseclib » Phpseclib » Version: 1.0.10

cpe:2.3:a:phpseclib:phpseclib:1.0.10
Phpseclib » Phpseclib » Version: 1.0.11

cpe:2.3:a:phpseclib:phpseclib:1.0.11
Phpseclib » Phpseclib » Version: 1.0.12

cpe:2.3:a:phpseclib:phpseclib:1.0.12
Phpseclib » Phpseclib » Version: 1.0.13

cpe:2.3:a:phpseclib:phpseclib:1.0.13
Phpseclib » Phpseclib » Version: 1.0.14

cpe:2.3:a:phpseclib:phpseclib:1.0.14
Phpseclib » Phpseclib » Version: 1.0.15

cpe:2.3:a:phpseclib:phpseclib:1.0.15
Phpseclib » Phpseclib » Version: 1.0.16

cpe:2.3:a:phpseclib:phpseclib:1.0.16
Phpseclib » Phpseclib » Version: 1.0.17

cpe:2.3:a:phpseclib:phpseclib:1.0.17
Phpseclib » Phpseclib » Version: 1.0.18

cpe:2.3:a:phpseclib:phpseclib:1.0.18
Phpseclib » Phpseclib » Version: 1.0.19

cpe:2.3:a:phpseclib:phpseclib:1.0.19
Phpseclib » Phpseclib » Version: 1.0.2

cpe:2.3:a:phpseclib:phpseclib:1.0.2
Phpseclib » Phpseclib » Version: 1.0.20

cpe:2.3:a:phpseclib:phpseclib:1.0.20
Phpseclib » Phpseclib » Version: 1.0.21

cpe:2.3:a:phpseclib:phpseclib:1.0.21
Phpseclib » Phpseclib » Version: 1.0.22

cpe:2.3:a:phpseclib:phpseclib:1.0.22
Phpseclib » Phpseclib » Version: 1.0.23

cpe:2.3:a:phpseclib:phpseclib:1.0.23
Phpseclib » Phpseclib » Version: 1.0.3

cpe:2.3:a:phpseclib:phpseclib:1.0.3
Phpseclib » Phpseclib » Version: 1.0.4

cpe:2.3:a:phpseclib:phpseclib:1.0.4
Phpseclib » Phpseclib » Version: 1.0.5

cpe:2.3:a:phpseclib:phpseclib:1.0.5
Phpseclib » Phpseclib » Version: 1.0.6

cpe:2.3:a:phpseclib:phpseclib:1.0.6
Phpseclib » Phpseclib » Version: 1.0.7

cpe:2.3:a:phpseclib:phpseclib:1.0.7
Phpseclib » Phpseclib » Version: 1.0.8

cpe:2.3:a:phpseclib:phpseclib:1.0.8
Phpseclib » Phpseclib » Version: 1.0.9

cpe:2.3:a:phpseclib:phpseclib:1.0.9
Phpseclib » Phpseclib » Version: 2.0.0

cpe:2.3:a:phpseclib:phpseclib:2.0.0
Phpseclib » Phpseclib » Version: 2.0.1

cpe:2.3:a:phpseclib:phpseclib:2.0.1
Phpseclib » Phpseclib » Version: 2.0.10

cpe:2.3:a:phpseclib:phpseclib:2.0.10
Phpseclib » Phpseclib » Version: 2.0.11

cpe:2.3:a:phpseclib:phpseclib:2.0.11
Phpseclib » Phpseclib » Version: 2.0.12

cpe:2.3:a:phpseclib:phpseclib:2.0.12
Phpseclib » Phpseclib » Version: 2.0.13

cpe:2.3:a:phpseclib:phpseclib:2.0.13
Phpseclib » Phpseclib » Version: 2.0.14

cpe:2.3:a:phpseclib:phpseclib:2.0.14
Phpseclib » Phpseclib » Version: 2.0.15

cpe:2.3:a:phpseclib:phpseclib:2.0.15
Phpseclib » Phpseclib » Version: 2.0.16

cpe:2.3:a:phpseclib:phpseclib:2.0.16
Phpseclib » Phpseclib » Version: 2.0.17

cpe:2.3:a:phpseclib:phpseclib:2.0.17
Phpseclib » Phpseclib » Version: 2.0.18

cpe:2.3:a:phpseclib:phpseclib:2.0.18
Phpseclib » Phpseclib » Version: 2.0.19

cpe:2.3:a:phpseclib:phpseclib:2.0.19
Phpseclib » Phpseclib » Version: 2.0.2

cpe:2.3:a:phpseclib:phpseclib:2.0.2
Phpseclib » Phpseclib » Version: 2.0.20

cpe:2.3:a:phpseclib:phpseclib:2.0.20
Phpseclib » Phpseclib » Version: 2.0.21

cpe:2.3:a:phpseclib:phpseclib:2.0.21
Phpseclib » Phpseclib » Version: 2.0.22

cpe:2.3:a:phpseclib:phpseclib:2.0.22
Phpseclib » Phpseclib » Version: 2.0.23

cpe:2.3:a:phpseclib:phpseclib:2.0.23
Phpseclib » Phpseclib » Version: 2.0.24

cpe:2.3:a:phpseclib:phpseclib:2.0.24
Phpseclib » Phpseclib » Version: 2.0.25

cpe:2.3:a:phpseclib:phpseclib:2.0.25
Phpseclib » Phpseclib » Version: 2.0.26

cpe:2.3:a:phpseclib:phpseclib:2.0.26
Phpseclib » Phpseclib » Version: 2.0.27

cpe:2.3:a:phpseclib:phpseclib:2.0.27
Phpseclib » Phpseclib » Version: 2.0.28

cpe:2.3:a:phpseclib:phpseclib:2.0.28
Phpseclib » Phpseclib » Version: 2.0.29

cpe:2.3:a:phpseclib:phpseclib:2.0.29
Phpseclib » Phpseclib » Version: 2.0.3

cpe:2.3:a:phpseclib:phpseclib:2.0.3
Phpseclib » Phpseclib » Version: 2.0.30

cpe:2.3:a:phpseclib:phpseclib:2.0.30
Phpseclib » Phpseclib » Version: 2.0.31

cpe:2.3:a:phpseclib:phpseclib:2.0.31
Phpseclib » Phpseclib » Version: 2.0.32

cpe:2.3:a:phpseclib:phpseclib:2.0.32
Phpseclib » Phpseclib » Version: 2.0.33

cpe:2.3:a:phpseclib:phpseclib:2.0.33
Phpseclib » Phpseclib » Version: 2.0.34

cpe:2.3:a:phpseclib:phpseclib:2.0.34
Phpseclib » Phpseclib » Version: 2.0.35

cpe:2.3:a:phpseclib:phpseclib:2.0.35
Phpseclib » Phpseclib » Version: 2.0.36

cpe:2.3:a:phpseclib:phpseclib:2.0.36
Phpseclib » Phpseclib » Version: 2.0.37

cpe:2.3:a:phpseclib:phpseclib:2.0.37
Phpseclib » Phpseclib » Version: 2.0.38

cpe:2.3:a:phpseclib:phpseclib:2.0.38
Phpseclib » Phpseclib » Version: 2.0.39

cpe:2.3:a:phpseclib:phpseclib:2.0.39
Phpseclib » Phpseclib » Version: 2.0.4

cpe:2.3:a:phpseclib:phpseclib:2.0.4
Phpseclib » Phpseclib » Version: 2.0.40

cpe:2.3:a:phpseclib:phpseclib:2.0.40
Phpseclib » Phpseclib » Version: 2.0.41

cpe:2.3:a:phpseclib:phpseclib:2.0.41
Phpseclib » Phpseclib » Version: 2.0.42

cpe:2.3:a:phpseclib:phpseclib:2.0.42
Phpseclib » Phpseclib » Version: 2.0.43

cpe:2.3:a:phpseclib:phpseclib:2.0.43
Phpseclib » Phpseclib » Version: 2.0.44

cpe:2.3:a:phpseclib:phpseclib:2.0.44
Phpseclib » Phpseclib » Version: 2.0.45

cpe:2.3:a:phpseclib:phpseclib:2.0.45
Phpseclib » Phpseclib » Version: 2.0.46

cpe:2.3:a:phpseclib:phpseclib:2.0.46
Phpseclib » Phpseclib » Version: 2.0.47

cpe:2.3:a:phpseclib:phpseclib:2.0.47
Phpseclib » Phpseclib » Version: 2.0.48

cpe:2.3:a:phpseclib:phpseclib:2.0.48
Phpseclib » Phpseclib » Version: 2.0.5

cpe:2.3:a:phpseclib:phpseclib:2.0.5
Phpseclib » Phpseclib » Version: 2.0.6

cpe:2.3:a:phpseclib:phpseclib:2.0.6
Phpseclib » Phpseclib » Version: 2.0.7

cpe:2.3:a:phpseclib:phpseclib:2.0.7
Phpseclib » Phpseclib » Version: 2.0.8

cpe:2.3:a:phpseclib:phpseclib:2.0.8
Phpseclib » Phpseclib » Version: 2.0.9

cpe:2.3:a:phpseclib:phpseclib:2.0.9
Phpseclib » Phpseclib » Version: 3.0.0

cpe:2.3:a:phpseclib:phpseclib:3.0.0
Phpseclib » Phpseclib » Version: 3.0.1

cpe:2.3:a:phpseclib:phpseclib:3.0.1
Phpseclib » Phpseclib » Version: 3.0.10

cpe:2.3:a:phpseclib:phpseclib:3.0.10
Phpseclib » Phpseclib » Version: 3.0.11

cpe:2.3:a:phpseclib:phpseclib:3.0.11
Phpseclib » Phpseclib » Version: 3.0.12

cpe:2.3:a:phpseclib:phpseclib:3.0.12
Phpseclib » Phpseclib » Version: 3.0.13

cpe:2.3:a:phpseclib:phpseclib:3.0.13
Phpseclib » Phpseclib » Version: 3.0.14

cpe:2.3:a:phpseclib:phpseclib:3.0.14
Phpseclib » Phpseclib » Version: 3.0.15

cpe:2.3:a:phpseclib:phpseclib:3.0.15
Phpseclib » Phpseclib » Version: 3.0.16

cpe:2.3:a:phpseclib:phpseclib:3.0.16
Phpseclib » Phpseclib » Version: 3.0.17

cpe:2.3:a:phpseclib:phpseclib:3.0.17
Phpseclib » Phpseclib » Version: 3.0.18

cpe:2.3:a:phpseclib:phpseclib:3.0.18
Phpseclib » Phpseclib » Version: 3.0.19

cpe:2.3:a:phpseclib:phpseclib:3.0.19
Phpseclib » Phpseclib » Version: 3.0.2

cpe:2.3:a:phpseclib:phpseclib:3.0.2
Phpseclib » Phpseclib » Version: 3.0.20

cpe:2.3:a:phpseclib:phpseclib:3.0.20
Phpseclib » Phpseclib » Version: 3.0.21

cpe:2.3:a:phpseclib:phpseclib:3.0.21
Phpseclib » Phpseclib » Version: 3.0.22

cpe:2.3:a:phpseclib:phpseclib:3.0.22
Phpseclib » Phpseclib » Version: 3.0.23

cpe:2.3:a:phpseclib:phpseclib:3.0.23
Phpseclib » Phpseclib » Version: 3.0.3

cpe:2.3:a:phpseclib:phpseclib:3.0.3
Phpseclib » Phpseclib » Version: 3.0.33

cpe:2.3:a:phpseclib:phpseclib:3.0.33
Phpseclib » Phpseclib » Version: 3.0.34

cpe:2.3:a:phpseclib:phpseclib:3.0.34
Phpseclib » Phpseclib » Version: 3.0.35

cpe:2.3:a:phpseclib:phpseclib:3.0.35
Phpseclib » Phpseclib » Version: 3.0.36

cpe:2.3:a:phpseclib:phpseclib:3.0.36
Phpseclib » Phpseclib » Version: 3.0.37

cpe:2.3:a:phpseclib:phpseclib:3.0.37
Phpseclib » Phpseclib » Version: 3.0.38

cpe:2.3:a:phpseclib:phpseclib:3.0.38
Phpseclib » Phpseclib » Version: 3.0.39

cpe:2.3:a:phpseclib:phpseclib:3.0.39
Phpseclib » Phpseclib » Version: 3.0.4

cpe:2.3:a:phpseclib:phpseclib:3.0.4
Phpseclib » Phpseclib » Version: 3.0.40

cpe:2.3:a:phpseclib:phpseclib:3.0.40
Phpseclib » Phpseclib » Version: 3.0.41

cpe:2.3:a:phpseclib:phpseclib:3.0.41
Phpseclib » Phpseclib » Version: 3.0.42

cpe:2.3:a:phpseclib:phpseclib:3.0.42
Phpseclib » Phpseclib » Version: 3.0.43

cpe:2.3:a:phpseclib:phpseclib:3.0.43
Phpseclib » Phpseclib » Version: 3.0.44

cpe:2.3:a:phpseclib:phpseclib:3.0.44
Phpseclib » Phpseclib » Version: 3.0.45

cpe:2.3:a:phpseclib:phpseclib:3.0.45
Phpseclib » Phpseclib » Version: 3.0.46

cpe:2.3:a:phpseclib:phpseclib:3.0.46
Phpseclib » Phpseclib » Version: 3.0.5

cpe:2.3:a:phpseclib:phpseclib:3.0.5
Phpseclib » Phpseclib » Version: 3.0.6

cpe:2.3:a:phpseclib:phpseclib:3.0.6
Phpseclib » Phpseclib » Version: 3.0.7

cpe:2.3:a:phpseclib:phpseclib:3.0.7
Phpseclib » Phpseclib » Version: 3.0.8

cpe:2.3:a:phpseclib:phpseclib:3.0.8
Phpseclib » Phpseclib » Version: 3.0.9

cpe:2.3:a:phpseclib:phpseclib:3.0.9

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-40194

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