RHSA-2026:39997
Vulnerability from csaf_redhat - Published: 2026-07-15 13:59 - Updated: 2026-08-09 11:11Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
perl:
* perl-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-Attribute-Handlers-1.03-524.3.hum1 (noarch)
* perl-AutoLoader-5.74-524.3.hum1 (noarch)
* perl-AutoSplit-5.74-524.3.hum1 (noarch)
* perl-B-1.89-524.3.hum1 (aarch64, x86_64)
* perl-Benchmark-1.27-524.3.hum1 (noarch)
* perl-Class-Struct-0.68-524.3.hum1 (noarch)
* perl-Config-Extensions-0.03-524.3.hum1 (noarch)
* perl-DBM_Filter-0.07-524.3.hum1 (noarch)
* perl-Devel-Peek-1.36-524.3.hum1 (aarch64, x86_64)
* perl-Devel-SelfStubber-1.06-524.3.hum1 (noarch)
* perl-DirHandle-1.05-524.3.hum1 (noarch)
* perl-Dumpvalue-2.27-524.3.hum1 (noarch)
* perl-DynaLoader-1.57-524.3.hum1 (aarch64, x86_64)
* perl-English-1.11-524.3.hum1 (noarch)
* perl-Errno-1.38-524.3.hum1 (aarch64, x86_64)
* perl-ExtUtils-Constant-0.25-524.3.hum1 (noarch)
* perl-ExtUtils-Embed-1.35-524.3.hum1 (noarch)
* perl-ExtUtils-Miniperl-1.14-524.3.hum1 (noarch)
* perl-Fcntl-1.20-524.3.hum1 (aarch64, x86_64)
* perl-File-Basename-2.86-524.3.hum1 (noarch)
* perl-File-Compare-1.100.800-524.3.hum1 (noarch)
* perl-File-Copy-2.41-524.3.hum1 (noarch)
* perl-File-DosGlob-1.12-524.3.hum1 (aarch64, x86_64)
* perl-File-Find-1.44-524.3.hum1 (noarch)
* perl-File-stat-1.14-524.3.hum1 (noarch)
* perl-FileCache-1.10-524.3.hum1 (noarch)
* perl-FileHandle-2.05-524.3.hum1 (noarch)
* perl-FindBin-1.54-524.3.hum1 (noarch)
* perl-GDBM_File-1.24-524.3.hum1 (aarch64, x86_64)
* perl-Getopt-Std-1.14-524.3.hum1 (noarch)
* perl-Hash-Util-0.32-524.3.hum1 (aarch64, x86_64)
* perl-Hash-Util-FieldHash-1.27-524.3.hum1 (aarch64, x86_64)
* perl-I18N-Collate-1.02-524.3.hum1 (noarch)
* perl-I18N-LangTags-0.45-524.3.hum1 (noarch)
* perl-I18N-Langinfo-0.24-524.3.hum1 (aarch64, x86_64)
* perl-IO-1.55-524.3.hum1 (aarch64, x86_64)
* perl-IPC-Open3-1.24-524.3.hum1 (noarch)
* perl-Locale-Maketext-Simple-0.21-524.3.hum1 (noarch)
* perl-Math-Complex-1.63-524.3.hum1 (noarch)
* perl-Memoize-1.17-524.3.hum1 (noarch)
* perl-Module-Loaded-0.08-524.3.hum1 (noarch)
* perl-NDBM_File-1.18-524.3.hum1 (aarch64, x86_64)
* perl-NEXT-0.69-524.3.hum1 (noarch)
* perl-Net-1.04-524.3.hum1 (noarch)
* perl-ODBM_File-1.20-524.3.hum1 (aarch64, x86_64)
* perl-Opcode-1.69-524.3.hum1 (aarch64, x86_64)
* perl-POSIX-2.23-524.3.hum1 (aarch64, x86_64)
* perl-Pod-Functions-1.14-524.3.hum1 (noarch)
* perl-Pod-Html-1.35-524.3.hum1 (noarch)
* perl-Safe-2.47-524.3.hum1 (noarch)
* perl-Search-Dict-1.08-524.3.hum1 (noarch)
* perl-SelectSaver-1.02-524.3.hum1 (noarch)
* perl-SelfLoader-1.28-524.3.hum1 (noarch)
* perl-Symbol-1.09-524.3.hum1 (noarch)
* perl-Sys-Hostname-1.25-524.3.hum1 (aarch64, x86_64)
* perl-Term-Complete-1.403-524.3.hum1 (noarch)
* perl-Term-ReadLine-1.17-524.3.hum1 (noarch)
* perl-Test-1.31-524.3.hum1 (noarch)
* perl-Text-Abbrev-1.02-524.3.hum1 (noarch)
* perl-Thread-3.06-524.3.hum1 (noarch)
* perl-Thread-Semaphore-2.13-524.3.hum1 (noarch)
* perl-Tie-4.6-524.3.hum1 (noarch)
* perl-Tie-File-1.10-524.3.hum1 (noarch)
* perl-Tie-Memoize-1.1-524.3.hum1 (noarch)
* perl-Time-1.04-524.3.hum1 (noarch)
* perl-Time-Piece-1.3600-524.3.hum1 (aarch64, x86_64)
* perl-Unicode-UCD-0.81-524.3.hum1 (noarch)
* perl-User-pwent-1.05-524.3.hum1 (noarch)
* perl-autouse-1.11-524.3.hum1 (noarch)
* perl-base-2.27-524.3.hum1 (noarch)
* perl-blib-1.07-524.3.hum1 (noarch)
* perl-debugger-1.60-524.3.hum1 (noarch)
* perl-deprecate-0.04-524.3.hum1 (noarch)
* perl-devel-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-diagnostics-1.40-524.3.hum1 (noarch)
* perl-doc-5.42.2-524.3.hum1 (noarch)
* perl-encoding-warnings-0.14-524.3.hum1 (noarch)
* perl-fields-2.27-524.3.hum1 (noarch)
* perl-filetest-1.03-524.3.hum1 (noarch)
* perl-if-0.61.000-524.3.hum1 (noarch)
* perl-interpreter-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-less-0.03-524.3.hum1 (noarch)
* perl-lib-0.65-524.3.hum1 (aarch64, x86_64)
* perl-libnetcfg-5.42.2-524.3.hum1 (noarch)
* perl-libs-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-locale-1.13-524.3.hum1 (noarch)
* perl-macros-5.42.2-524.3.hum1 (noarch)
* perl-meta-notation-5.42.2-524.3.hum1 (noarch)
* perl-mro-1.29-524.3.hum1 (aarch64, x86_64)
* perl-open-1.13-524.3.hum1 (noarch)
* perl-overload-1.40-524.3.hum1 (noarch)
* perl-overloading-0.02-524.3.hum1 (noarch)
* perl-ph-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-sigtrap-1.10-524.3.hum1 (noarch)
* perl-sort-2.06-524.3.hum1 (noarch)
* perl-subs-1.04-524.3.hum1 (noarch)
* perl-tests-5.42.2-524.3.hum1 (aarch64, x86_64)
* perl-utils-5.42.2-524.3.hum1 (noarch)
* perl-vars-1.05-524.3.hum1 (noarch)
* perl-vmsish-1.04-524.3.hum1 (noarch)
* perl-5.42.2-524.3.hum1.src (src)
Security Fix(es):
perl:
* CVE-2026-13221
* CVE-2026-57432
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Perl. An integer overflow vulnerability in the `S_measure_struct` function, specifically when handling `pack` and `unpack` templates with large repeat counts, can lead to an out-of-bounds heap read. This allows an attacker, by providing a specially crafted template, to read sensitive information from memory beyond the intended buffer. This could result in the disclosure of confidential data.
5.0 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:perl-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:perl-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:perl-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:perl-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
References
12 references
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"category": "summary",
"text": "An update for Red Hat Hardened Images RPMs is now available.",
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"text": "This update includes the following RPMs:\n\nperl:\n * perl-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-Attribute-Handlers-1.03-524.3.hum1 (noarch)\n * perl-AutoLoader-5.74-524.3.hum1 (noarch)\n * perl-AutoSplit-5.74-524.3.hum1 (noarch)\n * perl-B-1.89-524.3.hum1 (aarch64, x86_64)\n * perl-Benchmark-1.27-524.3.hum1 (noarch)\n * perl-Class-Struct-0.68-524.3.hum1 (noarch)\n * perl-Config-Extensions-0.03-524.3.hum1 (noarch)\n * perl-DBM_Filter-0.07-524.3.hum1 (noarch)\n * perl-Devel-Peek-1.36-524.3.hum1 (aarch64, x86_64)\n * perl-Devel-SelfStubber-1.06-524.3.hum1 (noarch)\n * perl-DirHandle-1.05-524.3.hum1 (noarch)\n * perl-Dumpvalue-2.27-524.3.hum1 (noarch)\n * perl-DynaLoader-1.57-524.3.hum1 (aarch64, x86_64)\n * perl-English-1.11-524.3.hum1 (noarch)\n * perl-Errno-1.38-524.3.hum1 (aarch64, x86_64)\n * perl-ExtUtils-Constant-0.25-524.3.hum1 (noarch)\n * perl-ExtUtils-Embed-1.35-524.3.hum1 (noarch)\n * perl-ExtUtils-Miniperl-1.14-524.3.hum1 (noarch)\n * perl-Fcntl-1.20-524.3.hum1 (aarch64, x86_64)\n * perl-File-Basename-2.86-524.3.hum1 (noarch)\n * perl-File-Compare-1.100.800-524.3.hum1 (noarch)\n * perl-File-Copy-2.41-524.3.hum1 (noarch)\n * perl-File-DosGlob-1.12-524.3.hum1 (aarch64, x86_64)\n * perl-File-Find-1.44-524.3.hum1 (noarch)\n * perl-File-stat-1.14-524.3.hum1 (noarch)\n * perl-FileCache-1.10-524.3.hum1 (noarch)\n * perl-FileHandle-2.05-524.3.hum1 (noarch)\n * perl-FindBin-1.54-524.3.hum1 (noarch)\n * perl-GDBM_File-1.24-524.3.hum1 (aarch64, x86_64)\n * perl-Getopt-Std-1.14-524.3.hum1 (noarch)\n * perl-Hash-Util-0.32-524.3.hum1 (aarch64, x86_64)\n * perl-Hash-Util-FieldHash-1.27-524.3.hum1 (aarch64, x86_64)\n * perl-I18N-Collate-1.02-524.3.hum1 (noarch)\n * perl-I18N-LangTags-0.45-524.3.hum1 (noarch)\n * perl-I18N-Langinfo-0.24-524.3.hum1 (aarch64, x86_64)\n * perl-IO-1.55-524.3.hum1 (aarch64, x86_64)\n * perl-IPC-Open3-1.24-524.3.hum1 (noarch)\n * perl-Locale-Maketext-Simple-0.21-524.3.hum1 (noarch)\n * perl-Math-Complex-1.63-524.3.hum1 (noarch)\n * perl-Memoize-1.17-524.3.hum1 (noarch)\n * perl-Module-Loaded-0.08-524.3.hum1 (noarch)\n * perl-NDBM_File-1.18-524.3.hum1 (aarch64, x86_64)\n * perl-NEXT-0.69-524.3.hum1 (noarch)\n * perl-Net-1.04-524.3.hum1 (noarch)\n * perl-ODBM_File-1.20-524.3.hum1 (aarch64, x86_64)\n * perl-Opcode-1.69-524.3.hum1 (aarch64, x86_64)\n * perl-POSIX-2.23-524.3.hum1 (aarch64, x86_64)\n * perl-Pod-Functions-1.14-524.3.hum1 (noarch)\n * perl-Pod-Html-1.35-524.3.hum1 (noarch)\n * perl-Safe-2.47-524.3.hum1 (noarch)\n * perl-Search-Dict-1.08-524.3.hum1 (noarch)\n * perl-SelectSaver-1.02-524.3.hum1 (noarch)\n * perl-SelfLoader-1.28-524.3.hum1 (noarch)\n * perl-Symbol-1.09-524.3.hum1 (noarch)\n * perl-Sys-Hostname-1.25-524.3.hum1 (aarch64, x86_64)\n * perl-Term-Complete-1.403-524.3.hum1 (noarch)\n * perl-Term-ReadLine-1.17-524.3.hum1 (noarch)\n * perl-Test-1.31-524.3.hum1 (noarch)\n * perl-Text-Abbrev-1.02-524.3.hum1 (noarch)\n * perl-Thread-3.06-524.3.hum1 (noarch)\n * perl-Thread-Semaphore-2.13-524.3.hum1 (noarch)\n * perl-Tie-4.6-524.3.hum1 (noarch)\n * perl-Tie-File-1.10-524.3.hum1 (noarch)\n * perl-Tie-Memoize-1.1-524.3.hum1 (noarch)\n * perl-Time-1.04-524.3.hum1 (noarch)\n * perl-Time-Piece-1.3600-524.3.hum1 (aarch64, x86_64)\n * perl-Unicode-UCD-0.81-524.3.hum1 (noarch)\n * perl-User-pwent-1.05-524.3.hum1 (noarch)\n * perl-autouse-1.11-524.3.hum1 (noarch)\n * perl-base-2.27-524.3.hum1 (noarch)\n * perl-blib-1.07-524.3.hum1 (noarch)\n * perl-debugger-1.60-524.3.hum1 (noarch)\n * perl-deprecate-0.04-524.3.hum1 (noarch)\n * perl-devel-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-diagnostics-1.40-524.3.hum1 (noarch)\n * perl-doc-5.42.2-524.3.hum1 (noarch)\n * perl-encoding-warnings-0.14-524.3.hum1 (noarch)\n * perl-fields-2.27-524.3.hum1 (noarch)\n * perl-filetest-1.03-524.3.hum1 (noarch)\n * perl-if-0.61.000-524.3.hum1 (noarch)\n * perl-interpreter-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-less-0.03-524.3.hum1 (noarch)\n * perl-lib-0.65-524.3.hum1 (aarch64, x86_64)\n * perl-libnetcfg-5.42.2-524.3.hum1 (noarch)\n * perl-libs-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-locale-1.13-524.3.hum1 (noarch)\n * perl-macros-5.42.2-524.3.hum1 (noarch)\n * perl-meta-notation-5.42.2-524.3.hum1 (noarch)\n * perl-mro-1.29-524.3.hum1 (aarch64, x86_64)\n * perl-open-1.13-524.3.hum1 (noarch)\n * perl-overload-1.40-524.3.hum1 (noarch)\n * perl-overloading-0.02-524.3.hum1 (noarch)\n * perl-ph-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-sigtrap-1.10-524.3.hum1 (noarch)\n * perl-sort-2.06-524.3.hum1 (noarch)\n * perl-subs-1.04-524.3.hum1 (noarch)\n * perl-tests-5.42.2-524.3.hum1 (aarch64, x86_64)\n * perl-utils-5.42.2-524.3.hum1 (noarch)\n * perl-vars-1.05-524.3.hum1 (noarch)\n * perl-vmsish-1.04-524.3.hum1 (noarch)\n * perl-5.42.2-524.3.hum1.src (src)\n\nSecurity Fix(es):\n\nperl:\n * CVE-2026-13221\n * CVE-2026-57432",
"title": "Details"
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"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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"title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update",
"tracking": {
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"relationships": [
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"product_id": "Red Hat Hardened Images:perl-main@aarch64"
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},
"product_reference": "perl-main@x86_64",
"relates_to_product_reference": "Red Hat Hardened Images"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-57432",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-07-13T17:01:22.129480+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2499729"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Perl. An integer overflow vulnerability in the `S_measure_struct` function, specifically when handling `pack` and `unpack` templates with large repeat counts, can lead to an out-of-bounds heap read. This allows an attacker, by providing a specially crafted template, to read sensitive information from memory beyond the intended buffer. This could result in the disclosure of confidential data.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "perl: Perl: Information disclosure via integer overflow in pack/unpack operations",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat is aware of this vulnerability in Perl\u0027s pack and unpack built-in functions. Exploitation requires an application to pass attacker-controlled data as a pack or unpack template, which is an uncommon programming pattern. In typical usage, templates are hardcoded in source code and not derived from untrusted input, which significantly limits the practical exploitability of this flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:perl-main@aarch64",
"Red Hat Hardened Images:perl-main@noarch",
"Red Hat Hardened Images:perl-main@src",
"Red Hat Hardened Images:perl-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-57432"
},
{
"category": "external",
"summary": "RHBZ#2499729",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499729"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-57432",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-57432"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-57432",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57432"
},
{
"category": "external",
"summary": "https://github.com/Perl/perl5/commit/40754edc72dd3e513d758153c0e2f0215897740e.patch",
"url": "https://github.com/Perl/perl5/commit/40754edc72dd3e513d758153c0e2f0215897740e.patch"
},
{
"category": "external",
"summary": "https://github.com/Perl/perl5/commit/5f7eb6bbbe0510964e3fb1d6bb691e5445913e55.patch",
"url": "https://github.com/Perl/perl5/commit/5f7eb6bbbe0510964e3fb1d6bb691e5445913e55.patch"
}
],
"release_date": "2026-07-13T15:38:20.728000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-15T13:59:38+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:perl-main@aarch64",
"Red Hat Hardened Images:perl-main@noarch",
"Red Hat Hardened Images:perl-main@src",
"Red Hat Hardened Images:perl-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:39997"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"Red Hat Hardened Images:perl-main@aarch64",
"Red Hat Hardened Images:perl-main@noarch",
"Red Hat Hardened Images:perl-main@src",
"Red Hat Hardened Images:perl-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:perl-main@aarch64",
"Red Hat Hardened Images:perl-main@noarch",
"Red Hat Hardened Images:perl-main@src",
"Red Hat Hardened Images:perl-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "perl: Perl: Information disclosure via integer overflow in pack/unpack operations"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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