CVE-2020-13270 [High] | Security Vulnerability in Gitlab

CVE-2020-13270 is rated Moderate Risk (55.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.41%). EPSS rose +1.05% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.36%	1.41%	+1.05%
2	2025-11-21	0.22%	0.36%	+0.14%
3	2025-11-18	—	0.22%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.36%

1.41%

+1.05%

2025-11-21

0.22%

0.36%

+0.14%

2025-11-18

—

0.22%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.6	5.9	[email protected]
8.8	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	5.9	[email protected]
6.5	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:S) A single authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.6

5.9

[email protected]

8.8

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

5.9

[email protected]

6.5

2.0

MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:S): A single authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.0

6.4

[email protected]

OS Trackers for CVE-2020-13270

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2020-13270 not yet assigned priority: Debian including 1 source packages (gitlab), 1 status rows across 1 suites (sid): resolved 1.	https://security-tracker.debian.org/tracker/CVE-2020-13270
`ubuntu`	medium	CVE-2020-13270 medium priority: Ubuntu including 1 source packages (gitlab), 13 status rows across 13 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 11, ignored 1, released 1.	https://ubuntu.com/security/CVE-2020-13270

Affected software / configurations for CVE-2020-13270

Vendor	Product	Version	Raw CPE
gitlab	gitlab	>= 11.3.0, < 11.9.8	cpe:2.3:a:gitlab:gitlab:::::community:::*
gitlab	gitlab	>= 11.3.0, < 12.9.8	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
gitlab	gitlab	>= 12.10.0, < 12.10.7	cpe:2.3:a:gitlab:gitlab:::::community:::*
gitlab	gitlab	>= 12.10.0, < 12.10.7	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
gitlab	gitlab	>= 13.0.0, < 13.0.1	cpe:2.3:a:gitlab:gitlab:::::community:::*
gitlab	gitlab	>= 13.0.0, < 13.0.1	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*

References for CVE-2020-13270

URL	Tags
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13270.json	Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/24648	Broken Link Vendor Advisory
https://hackerone.com/reports/419977	Permissions Required Third Party Advisory

URL

CVE-2020-13270

Exploit prediction scoring system (EPSS) score for CVE-2020-13270

Common vulnerability scoring system (CVSS) metrics for CVE-2020-13270

Weakness enumeration for CVE-2020-13270

OS Trackers for CVE-2020-13270

Affected software / configurations for CVE-2020-13270

References for CVE-2020-13270