CVE-2020-27828 [High] | Input Validation Bypass in Jasper

CVE-2020-27828 is rated High Exploit Risk (71.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.37%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.03% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.34%	1.37%	+1.03%
2	2026-04-22	0.24%	0.34%	+0.11%
3	2025-03-30	—	0.24%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.34%

1.37%

+1.03%

2026-04-22

0.24%

0.34%

+0.11%

2025-03-30

—

0.24%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. 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:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. 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.	1.8	5.9	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.

1.8

5.9

[email protected]

6.8

2.0

MEDIUM

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

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

OS Trackers for CVE-2020-27828

vendor	priority	summary	link
`alpine`	high	CVE-2020-27828: 1 source package rows (jasper); 1 state rows across 1 repos (3.10-main); fixed 0, open 1.	https://security.alpinelinux.org/vuln/CVE-2020-27828
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2020-27828
`suse`	high	CVE-2020-27828 severity important: SUSE including 255 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 350 product×package rows across 73 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-SAP-BYOS, … (73 product lines)): Known Affected 231, Fixed 119.	https://www.suse.com/security/cve/CVE-2020-27828/
`ubuntu`	medium	CVE-2020-27828 medium priority: Ubuntu including 1 source packages (jasper), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): DNE 4, released 2.	https://ubuntu.com/security/CVE-2020-27828

Affected software / configurations for CVE-2020-27828

Vendor	Product	Version	Raw CPE
jasper_project	jasper	< 2.0.23	cpe:2.3:a:jasper_project:jasper::::::::
fedoraproject	fedora	32	cpe:2.3:o:fedoraproject:fedora:32:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*

References for CVE-2020-27828

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1905201	Issue Tracking Patch Third Party Advisory
https://github.com/jasper-software/jasper/issues/252	Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COBEVDBUO3QTNR6YQBBTIQKNIB6W3MJ2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBZZ2SNTQ4BSA6PNJCTOAKXIAXYNNF6V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4ALB4SXHURLVWKAOKYRNJXPABW3M22M/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPOVZTSIQPW2H4AFLMI3LHJEZGBVEQET/

URL

CVE-2020-27828

Public exploit references (Exploit-DB) for CVE-2020-27828

Exploit prediction scoring system (EPSS) score for CVE-2020-27828

Common vulnerability scoring system (CVSS) metrics for CVE-2020-27828

Weakness enumeration for CVE-2020-27828

OS Trackers for CVE-2020-27828

Affected software / configurations for CVE-2020-27828

References for CVE-2020-27828