CVE-2021-26690

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

65.31% chance of exploitation in the next 30 days, 99th percentile

Published

2021-06-10

Updated

2024-08-03

Proof-of-concept exploits (3)

• 7own/CVE-2021-26690---Apache-mod_session1★ · 2024-11-01
• danielduan2002/CVE-2021-266900★ · 2024-12-28
• fkm75P8YjLkb/CVE-2021-266900★ · 2021-07-15

References

• CVE Record
• NVD entry

Related

• CVE-2021-26691
• CVE-2021-30641
• CVE-2021-34496
• CVE-2021-26601
• CVE-2021-26600
• CVE-2021-26698